School Books > Social Science > S. Chand’s Social Sciences for Class-8 S. Chand’s Social Sciences for Class-8 J C Aggarwal & N.K. Science is one of the most important subjects in Class 8 CBSE Board examination. Publisher: S.Chand & Company Pvt.Ltd. Which of the following cannot be used as a food preservative? Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Alcohol can be converted into vinegar by the action of micro-organisms called bacteria. We preserve cooked food in the refrigerator at home. The spreading of diseases by mosquitoes can be prevented by following ways: Question 46 A. Answer: Name two fruits which are preserved: In Class 8 Science Chapter 3, the descriptions of man-made fires and their uses are given. (iv) Yeast The dilute solution of acetic acid is called vinegar. Which of the following is not a communicable disease? (d) algae, and (vii) g, Question 93. Class 9 - Maths+Science; Class 9 - Science; Class 9 - Mathematics; Class 9 - Science+Maths Video Paper Solutions; Class 10. Name one plant disease each caused: Answer: Which micro-organism converts sugar into alcohol during fermentation? Question 78. (b) Name (i) mosquito R (ii) protozoan S, and (iii) disease T. We Provide Step by Step Answer of Exe-8(a), Exe-8(b), Exe-8(c), with Chapter Test of S Chand OP Malhotra Maths . Answer: Next it is chilled very fast to prevent bacteria from growing. Answer: (vii) penicillium Viruses differ from other micro-organisms because they are too much smaller in comparison to other micro-organisms. C. a fungus Name one disease which spreads by breathing in air containing micro-organisms. Question 1. D. measles Answer: The parasite called Plasmodium causes a disease known as malaria. s chand class xii physics s chand flipkart com. D. increasing the fertility of soil Question 76. Some bacteria and blue green algae present in the soil and rhizobium present in the root nodules of leguminous plants can fix atmospheric nitrogen. (b) What causes this disease? (d) Algae – (I) Spirogyra (II) Chlamydomonas (c) Yellow vein mosaic of bhindi (Okra) They do not show most of the characteristics of the living organisms like respiration. Thus, micro-organisms decompose the harmful and smelly dead remains of plants and animals into harmless materials and thereby clean up the environment. Milk is turned into curd by bacteria. Distinguish between prokaryotic and eukaryotic cells. (b) Anthrax disease is caused by a bacterium. Question 57. Class 8 Maths Chapter 2 Linear Equations in One Variable Exercise 2.1 Questions with Solutions to help you to revise complete Syllabus and Score More marks. Sodium benzoate and sodium metabisulphite are common preservatives. Name the instrument (or device) which is needed to see the micro-organisms. The malaria disease is caused by a protozoan called plasmodium. Answer: Hey guys,, How's your studies going on? S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are considered an extremely helpful source for exam preparation. Lakhmir Singh and Manjit Kaur Science solution: … Name one ‘biological nitrogen-fixer’. S.Chand’s Science Book-8 B K Gowel. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. Question 77. It lives in the root nodules of leguminous plants such as beans and peas, with which it has a symbiotic relationship. Question 11. Protozoa Plasmodium causes malaria disease. Question 42. They just reproduce. s chand principles of physics class 11 b bag. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation? How do micro-organisms help in increasing soil fertility? C. sodium benzoate Question 27. Certain microbes are also used in the biological treatment of sewage and industrial effluents. What is the name of micro-organisms which reproduce only inside the living cells of other organisms ? Maintain personal hygiene and good sanitary habits. And the working mechanism of the antibiotics is to break the cell wall and attack on the bacteria. 2 Comments. Timely vaccination against diseases should also be taken. (b) female Aedes mosquito? Answer: What is the name of micro-organisms which reproduce only inside the living … D. Kneading The carrier of parasite of malaria is Female Anopheles mosquito. (a) bacteria Question 74. All the chapters are divided into clear and concise manner so that it becomes easy for you to understand the concepts and solve the questions. A. female anopheles These acids are utilized by various organisms. Name the fungus. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Answer: Answer: Question 67 B. Question 72. Answer: (a) (i) Female Aedes mosquito (ii) Dengue Answer: Carbon dioxide is the gas which is mainly responsible for causing global warming. You will find all the solutions in a detailed manner and without any mistake. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Yeast converts sugar into alcohol during fermentation. Name the bacterium which converts milk into curd: Answer: The first antibiotic called penicillin was extracted from: (D) Blue-green algae B. virus I hope you are doing well ! Question 89. Name two leguminous plants which can fix nitrogen. Question 21. Name any two communicable diseases. We provide its users access to a profuse supply of questions with their solutions. and ………… for ages. Answer: Which of the two spreads dengue: mosquito or housefly ? A person must finish the full course of antibiotics prescribed by the doctor. Answer: C. cholera State any two ways of preventing diseases spread by houseflies. (c) Baking of Bread The mosquito P is a carrier of virus and spreads a disease Question Another mosquito R is the carrier of protozoan S and spreads s disease called T. When this contaminated food is consumed by a person, pathogens enter into his body and causes various diseases. Lakhmir Singh Science Solutions Class 8 Chapter 1 Crop Production And Management: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 2 Micro-Organisms Friends And Foe: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 3 Synthetic Fibers And Plastics: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 4 Materials Metals And Non-Metals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 5 Coal And Petroleum: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 6 Combustion And Flame: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 7 Conservation Of Plants And Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 8 Cell Structure And Functions: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 9 Reproduction In Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 10 Reaching The Age Adolescence: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 11 Force And Pressure: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 12 Friction: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 13 Sound: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 14 Chemical Effects Of Electric Current: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 15 Some Natural Phenomena: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 16 Light: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 17 Stars And The Solar System: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 18 Pollution Of Air And Water: View Pdf, Copyright © 2019 All Rights Reserved, selfstudys.com, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions PDF, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions, Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 PDF, Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions. How do mosquitoes carry disease-causing micro-organisms and spread diseases? Alcohol can be converted into vinegar by the action of micro-organisms called: These micro-organisms are commonly called biological nitrogen fixers. C. malaria (a) yeast Meat and fish are preserved by using common salt. Answer: Viruses are the smallest micro-organisms which reproduce only inside the living cells of other organisms. Medium – English Medium. Answer: Social Science. How is sound produced? Mr. Rajiv Anand has opened a recurring deposit account of Rs. (a) in the form of pickles Board – CBSE. OP Malhotra Differentiation S.Chand ISC Class-12 Maths Solutions Ch-8. The houseflies feed on garbage, animal excreta and dead organic matter. Answer: Question 1. Answer: (f) Causing AIDS Lightning is a natural phenomenon which occurs in the sky and responsible for nitrogen fixation. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Answer: OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8. (c) Citrus canker is caused by bacteria. (c) by bacteria Name the disease caused by HIV. The foundation of most subjects is set up in this class only. C. growth of yeast cells This Pasteurized milk can be consumed without boiling as it is free from harmful microbes. B. streptomycein Answer: Yeast, a fungus is capable of converting sugar into alcohol and carbon dioxide. The communicable diseases can occur and spread in the following ways: Question 67 A. This antibiotic was made from the fungus called penicillium. Answer: The temperature and pressure during lightning convert atmospheric nitrogen into oxides of nitrogen. C. hydrochloric acid Chlamydomonas – Algae; solution, icse-allied publishers Female Aedes mosquito carries dengue virus. A. Alexander Fleming OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8 B.Sc.,B.Ed. A. sodium bicarbonate Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: Yeast is used for commercial production of alcohol and wine. Prokaryotic. Question 70. If not, how can they be seen? D. female anopheles mosquito Typhoid and Cholera are caused by bacteria in human beings. Advertisement. The S Chand Science Solutions for Class 8 have been explained in such a manner that it helps students to know the concepts with ease. D. spider Why are children given vaccination ? Which disease is spread by: solution. C. malaria Answer: When cooked food is kept in a cold place, then the food does not get spoiled easily. Lakhmir Singh Manjit Kaur Class 8 Science Solution. These nitrogen compounds combine with rainwater to form nitric and nitrous acid which mix with the soil. Later, he became a Professor at that college. (b) Citrus canker – Bacteria physics notes class 11 chapter 4 motion in a plane part 1. s chand s principles of physics for class xi english as. Answer: These solutions help students in exams as well as their daily homework. (B) Rhizobium bacteria Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. All mosquitoes breed in water . The Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 can help you make your concepts strong with the help of questions having a different level of difficulty. or own an. (e) Common salt has been used to preserve…………. Question 32. 1 Chapter Wise Class 8 Science NCERT Solutions for 2020-2021; 2 NCERT Solutions for Class 8 Science All Chapters; 3 CBSE Class 8 Science Solutions updated for 2020-2021; 4 Class 8 Science Important Questions for 2020-21; 5 Class 8 Science Multiple Choice Questions (MCQ ) 2020-21; 6 Class 8 Science Solutions and Main Points for NCERT Books. Answer: Manjit Kaur has been a school teacher for many years, and she has co-authored various science books. It increase the volume of dough. And when this housefly sits on uncovered food, they may transfer the pathogens and food gets contaminated. (b) Yellow vein Virus Insect mosaic of bhindi (Okra), a plant disease, is caused by virus. Malaria disease spreads through insect bites. Answer: Also name the causative micro-organisms and mode of transmission for each of these diseases. A. virus A. preparation of medicines (or drugs) Answer: They are also used in cleaning up of the environment. (ii) a ; Answer: Answer: All updated in a single page. (a) Foot and mouth disease is caused by a virus. Answer: Answer: Since the immune system of children is not strong and they are more likely to catch any disease very easily, so all the children should be vaccinated at the proper ages to provide them immunity from certain diseases. Chowdhry. Subject – Science. Answer: Question 2. Lakhmir Singh Science Class 8 Solutions: Lakhmir Singh and Manjit Kaur Science Class 8 Solutions free pdf download are available here.S Chand Science Class 8 Solutions are series of books which conforms to the NCERT syllabus. S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are prepared by SelfStudys experts in a comprehensive manner so that students can read the chapters in a detailed way. The solutions covered are easy to understand, and each step by step in the solution is described to match the students’ understanding. Answer: Name any two human diseases caused by viruses. Question 90. Draw a neat, labelled diagram of nitrogen cycle in nature. Question 52. In this process, first alcohol is produce by using yeast. Its help you to complete your homework. NCERT Solutions of Class 8 Science of Chapter 18 includes solutions of all 11 questions given in … Name two food materials which can be preserved by using sugar. A. sugar D. viruses When the housefly sits on garbage and animal excreta for feeding, then the millions of disease-causing micro-organisms present in them sticking to the body of housefly. Question 43. Leguminous plants such as beans and peas can fix nitrogen. Answer: Answer: Genius Teacher is India’s best quiz-based learning app. Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: (a) female Anopheles mosquito carries the parasite of malaria. A. ant Question 12. It is involved in the fixation of nitrogen in leguminous plants (pulses). C. housefly Diseases cholera and tuberculosis spread by housefly. Name the microbe which causes malaria disease. Answer: (a) Rust of wheat (vii) Hepatitis B When a small amount of pre-made curd is added into warm milk, then lactobacillus bacterium present in curd multiplies in milk and converts it into curd. Subject – Science. Micro-organisms are too much smaller that they cannot be seen with naked eye. It's All About Science Physics Class 8 R P Rana. (b) Micro-organisms like bacteria and fungi present in the spoilt dish of mutton causes the disease, food poisoning. (b) setting of curd C. Louis Pasteur Answer: B. housefly The main aim of writing science solutions for class 8 to help students understand … B. smallpox Keep the infected person separated from others & advice him/ her to keep a handkerchief on the nose and mouth while sneezing. (c) What is the sex of mosquito P? Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 11 . (a) The fruits which are preserved in the form of pickles by using oil and vinegar as preservative are raw mango and lemon. Question 58. Answer: Question 3. Vaccine works as follows: Question 68 B. Answer: S.Chand’s ICSE Mathematics Solution; ML Aggarwal Solution; RD Sharma Math Solution; Science Diagrams; New Learning Composite Mathematics SK Gupta Anubhuti Gangal Solution ; Lakhmir Singh Manjit Kaur Class 8 Science 11th Chapter Force and Pressure. They can be seen with a magnifying glass called microscope. It increases the volume of dough. Answer: B. sodium hydroxide Which of the following increases the fertility of soil Answer: Question 38. Name two common insects which act as carriers of disease-causing micro-organisms (or disease-causing microbes). Viruses are too much smaller in comparison to other micro-organisms. Question 71. (ii) rhizobium The parasite called Plasmodium causes a disease known as: We should not let water collect anywhere in the neighborhood. The bread dough rises because of: What precautions must be taken while taking antibiotics? For Study plan details. S. Chand's Science for Class - 8 book. Subject – Science. When the vaccine containing dead or weakened microbes is introduced into the body of a healthy person, the body fights and kills the microbes by producing some substance called antibodies. Question 83. S. Chand's Science For Class 8 For B. Sc. Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Answer: B and D as these two organisms are able to fix nitrogen gas from atmosphere to enrich soil with nitrogen compounds hence increasing fertility of soil. The S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are crafted by subject experts who have vast knowledge over the subject. Page Contents. The Solutions are based on the latest CBSE syllabus pattern. B. protozoan Name any two (C) Spirogyra algae Answer: Answer: … NCERT Solutions for class 9 provide you with a quick way to complete your homework. Answer: Question 66 A. (v) A protozoan Practice Questions. Author Name – Lakhmir Singh Manjit Kaur. C. dragonfly (i) e; Name the instrument (or device) which is needed to see the micro-organisms. S Chand ICSE Maths Solutions for Class 10 Chapter 2 Banking Exercise 2. Amoeba, Lactobacillus, Chlamydomonas, Penicillium, Yeast, HIV These NCERT Solutions for Class 6 Social Science help you understand concepts, events, etc. Antibiotics are not effective against ‘common cold’ and ‘flu’ as these are caused by viruses. Vegetables like methi leaves and spinach are preserved by sun-drying method in our homes. Answer: Mosquito repellant creams should be applied on the exposed parts of the body. (vi) f ; Question 9. Question 6. HIV causes AIDS disease. Answer: Answer: C. fermentation The two ways in which in which nitrogen gas of the atmosphere can be ‘fixed’ in nature to get nitrogen compounds in the soil are: (i) Nitrogen fixation by lightning: Lightning also helps in fixing atmospheric nitrogen into the soil. B. typhoid (b) (i) Female Anopheles mosquito (ii) Plasmodium (iii) Malaria What is meant by fermentation? C. bacterium State the causative micro-organisms and modes of transmission of the following human diseases : S Chand Class 8 need not be intimidating for you. Female Aedes mosquito acts as carrier of dengue virus. 400 per month for 20 month in a bank. (b) Viruses – (I) HIV (II) Tobacco Mosaic virus (TMV) Name any two human diseases caused by fungi. Edward Jenner discovered the vaccine for smallpox in 1978. A. bacteria Excel in academics with NCERT Solutions for CBSE Class 8 Science Chapter 6 Combustion and Flame. Scoring better marks in the examinations is important for CBSE Class 8th students. Question 29. Question 53. B. a protozoan Name the insect which carries dengue virus. D. fungus Answer: Question 50. B. fungi Answer: Question 64. Science for Tenth Class Part 2 (Hindi) Chemistry Book-10 Lakhmir Singh. Penicillium – Fungi ; All the questions has been solved by experts and explained in detail. The micro-organism which is capable of converting sugar into alcohol and carbon dioxide is: They just reproduce. Blue green algae fix the atmospheric nitrogen to enrich soil with nitrogen and hence, increase soil fertility. S.Chand’s Science Book-8 B K Gowel. In Chapter 8 of Grade 8 Science, we have to study about few synthetic fibres like Nylon, Rayon or Artificial Silk, Polyester and Acrylic.We should know about the properties of these synthetic fibres. Here are some reasons why it would be helpful: The Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions offers various advantages to students who are appearing for the examination. Proper sanitation should be maintained in the kitchen. These are as follows: Question 68 A. The acetobacter bacteria is then added to alcohol. Answer: Senior Teacher of Science in reputed school of Directorate of Education, Delhi. Important Keywords. (a) Alcohol is produced with the help of ………… An antibiotic Penicillin was extracted from fungus (mould) by Alexander Fleming in 1929. (iii) Chickenpox Social Science. Name the micro-organisms present in the soil and in the root nodules of leguminous plants which can fix atmospheric nitrogen. Question 44 B. The carrier of malaria causing protozoan called plasmodium is female anopheles mosquito. State the beneficial effects (or usefulness) of micro-organisms in our lives. 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The S Chand Class 8 Science Solutions chapter-wise is given below. Education Franchise × Contact Us. Question 88. Acetobacter bacteria convert alcohol into acetic acid (or vinegar). Malaria and dengue spread by mosquitoes. Question 55 A. Yeast – Fungi ; After consuming a dish of mutton, a person complained of nausea, vomiting, diarrhoea, and pain in the abdomen. This pdf is available for student for free to download. (ii) Measles S Chand Science Class 8 Solutions Chapter 13 Sound Lakhmir Singh Science Class 8 Chapter 13 Very Short Answer Type Questions Question 1. A vaccine is a special kind of preparation which provides immunity against a particular disease. The process of conversion of sugar into alcohol is known as fermentation. The houseflies feed on garbage, animal excreta and dead organic matter. C. fermentation State an important function performed by blue-green algae. Published: 2016. Lakhmir Singh Solutions for CBSE Class 8, 9, 10 for the academic year 2020-21 are provided at BYJU’S. (f) milk (a) Name (i) mosquito P, and (ii) disease Question The questions given in S Chand Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. (f) The food material which is preserved by pasteurization is …………….. of Pages: 352. We will help as soon as possible. Yeast is used in baking industry for making bread. (a) Rust of wheat – Fungi They carry disease-causing micro-organisms (microbes) inside its body. Question 36. Question 81. Question 4. If student do exam preparation from these reference book, this book help the student to score very good marks. Question 2. Question 37. (a) Foot and mouth disease from Delhi University. (iii) Lactobacillus D. dengue A. sodium metabisulphate Name any two human diseases caused by bacteria. (a) by fungi A. cholera And the viruses do not have cells but live in the cells of living beings. Answer: Why are antibiotics not effective against ‘common cold’ and ‘flu’? Board – CBSE. Class – 8. Name one disease which spreads through infected food or water. Question 33. B. fungus Which micro-organism is utilized in making curd from milk ? Name the insect which is the carrier of parasite of malaria. So, when all your chapters are crystal clear, scoring higher marks in the examination will become much easier. Name any five human diseases caused by micro-organisms. Answer: C. protozoan (b) viruses Of these, the bacterium Lactobacillus promotes the formation of curd. Students who aspire to make a career in the medical must prepare for this subject efficiently to score good marks in the Class 8 Board examination. About the book. B. housefly Binding: Paper Back. Answer: Bubbles of the gas fill the dough and increase its volume. B. Edward jenner Answer: An object should vibrate in order to be table to […] We should keep our surrounding clean and dry. Question 73. Answer: What is their function? Answer: C. protozoa These NCERT Solutions for Class 6 Social Science are also the best source of self-analysis of results for students. From Delhi University in yr 1970. This book really help the 9th Class Students in Science Examination. Question 20. Question 66 B. Question 47 B. B. alcohol. Question 14. Answer: These solutions will provide you with an edge over the others because S Chand Biology Class 10 Solutions are concise and to the point. ICSE - goyal brothers Develop your conceptual skills during revision with TopperLearning’s model solutions by expert educators. Question 61. Question 35. Jams and jellies are preserved by using sugar. The process of conversation of sugar into alcohol is known as fermentation. Tuberculosis disease spreads by breathing in air containing micro-organisms. Question 31. Several diseases including tuberculosis, smallpox, cholera and hepatitis can be prevented by vaccination. Why should we not let water collect anywhere in the neighbourhood? (d) What is the sex of mosquito r? Diseases athlete’s food and ring worm are caused by fungi. The micro-organisms which can reproduce and multiply only cells of other organisms are: This lactic acid then converts milk into curd. Class – 8 (Eight). Answer: Question 28. The questions given in S Chand Biology Class 10 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. The carrier of malaria causing protozoan is: This antibiotic was made from the fungus called penicillium. Microscope is needed to see the micro-organisms. The process of pasteurization for the preservation of milk is discovered by Louis Pasteur. D. an alga (c) protozoa Click here to download chemistry Click here to download physics ️ About The Authors ⬅️ Lakhmir Singh has extensive experience teaching science subjects, and has written many books on the three main branches of science - physics, chemistry and biology.He graduated with a Physics (Honours) degree from the Hindu College, and later obtained an M.Sc from Delhi University. Question 30. Answer: Lakhmir Singh Science Solutions Class 8 Chapter, Lakhmir singh and manjit kaur Some of the precautions should be taken while taking antibiotics which are as follows: Question 49. (iii) b; (d) Cholera is caused by………….. Amoeba – Protozoa ; (d) bacteria Stormcloaks Or Imperials, Nissin Raoh Tonkotsu Review, Ceramic Paint Hobbycraft, Painting Over Gold Leaf, Best Music Libraries To Submit To, Mansoor Ali Khan Show, National Exotic Car Rental, Murshidabad Ration Dealer List, Laramie County Jail, Ios Development Course Vancouver, Preston Pruitt Funeral Home Danville Ky Obituaries, Comparison Essay Title Generator, "> School Books > Social Science > S. Chand’s Social Sciences for Class-8 S. Chand’s Social Sciences for Class-8 J C Aggarwal & N.K. Science is one of the most important subjects in Class 8 CBSE Board examination. Publisher: S.Chand & Company Pvt.Ltd. Which of the following cannot be used as a food preservative? Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Alcohol can be converted into vinegar by the action of micro-organisms called bacteria. We preserve cooked food in the refrigerator at home. The spreading of diseases by mosquitoes can be prevented by following ways: Question 46 A. Answer: Name two fruits which are preserved: In Class 8 Science Chapter 3, the descriptions of man-made fires and their uses are given. (iv) Yeast The dilute solution of acetic acid is called vinegar. Which of the following is not a communicable disease? (d) algae, and (vii) g, Question 93. Class 9 - Maths+Science; Class 9 - Science; Class 9 - Mathematics; Class 9 - Science+Maths Video Paper Solutions; Class 10. Name one plant disease each caused: Answer: Which micro-organism converts sugar into alcohol during fermentation? Question 78. (b) Name (i) mosquito R (ii) protozoan S, and (iii) disease T. We Provide Step by Step Answer of Exe-8(a), Exe-8(b), Exe-8(c), with Chapter Test of S Chand OP Malhotra Maths . Answer: Next it is chilled very fast to prevent bacteria from growing. Answer: (vii) penicillium Viruses differ from other micro-organisms because they are too much smaller in comparison to other micro-organisms. C. a fungus Name one disease which spreads by breathing in air containing micro-organisms. Question 1. D. measles Answer: The parasite called Plasmodium causes a disease known as malaria. s chand class xii physics s chand flipkart com. D. increasing the fertility of soil Question 76. Some bacteria and blue green algae present in the soil and rhizobium present in the root nodules of leguminous plants can fix atmospheric nitrogen. (b) What causes this disease? (d) Algae – (I) Spirogyra (II) Chlamydomonas (c) Yellow vein mosaic of bhindi (Okra) They do not show most of the characteristics of the living organisms like respiration. Thus, micro-organisms decompose the harmful and smelly dead remains of plants and animals into harmless materials and thereby clean up the environment. Milk is turned into curd by bacteria. Distinguish between prokaryotic and eukaryotic cells. (b) Anthrax disease is caused by a bacterium. Question 57. Class 8 Maths Chapter 2 Linear Equations in One Variable Exercise 2.1 Questions with Solutions to help you to revise complete Syllabus and Score More marks. Sodium benzoate and sodium metabisulphite are common preservatives. Name the instrument (or device) which is needed to see the micro-organisms. The malaria disease is caused by a protozoan called plasmodium. Answer: Hey guys,, How's your studies going on? S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are considered an extremely helpful source for exam preparation. Lakhmir Singh and Manjit Kaur Science solution: … Name one ‘biological nitrogen-fixer’. S.Chand’s Science Book-8 B K Gowel. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. Question 77. It lives in the root nodules of leguminous plants such as beans and peas, with which it has a symbiotic relationship. Question 11. Protozoa Plasmodium causes malaria disease. Question 42. They just reproduce. s chand principles of physics class 11 b bag. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation? How do micro-organisms help in increasing soil fertility? C. sodium benzoate Question 27. Certain microbes are also used in the biological treatment of sewage and industrial effluents. What is the name of micro-organisms which reproduce only inside the living cells of other organisms ? Maintain personal hygiene and good sanitary habits. And the working mechanism of the antibiotics is to break the cell wall and attack on the bacteria. 2 Comments. Timely vaccination against diseases should also be taken. (b) female Aedes mosquito? Answer: What is the name of micro-organisms which reproduce only inside the living … D. Kneading The carrier of parasite of malaria is Female Anopheles mosquito. (a) bacteria Question 74. All the chapters are divided into clear and concise manner so that it becomes easy for you to understand the concepts and solve the questions. A. female anopheles These acids are utilized by various organisms. Name the fungus. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Answer: Answer: Question 67 B. Question 72. Answer: (a) (i) Female Aedes mosquito (ii) Dengue Answer: Carbon dioxide is the gas which is mainly responsible for causing global warming. You will find all the solutions in a detailed manner and without any mistake. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Yeast converts sugar into alcohol during fermentation. Name the bacterium which converts milk into curd: Answer: The first antibiotic called penicillin was extracted from: (D) Blue-green algae B. virus I hope you are doing well ! Question 89. Name two leguminous plants which can fix nitrogen. Question 21. Name any two communicable diseases. We provide its users access to a profuse supply of questions with their solutions. and ………… for ages. Answer: Which of the two spreads dengue: mosquito or housefly ? A person must finish the full course of antibiotics prescribed by the doctor. Answer: C. cholera State any two ways of preventing diseases spread by houseflies. (c) Baking of Bread The mosquito P is a carrier of virus and spreads a disease Question Another mosquito R is the carrier of protozoan S and spreads s disease called T. When this contaminated food is consumed by a person, pathogens enter into his body and causes various diseases. Lakhmir Singh Science Solutions Class 8 Chapter 1 Crop Production And Management: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 2 Micro-Organisms Friends And Foe: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 3 Synthetic Fibers And Plastics: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 4 Materials Metals And Non-Metals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 5 Coal And Petroleum: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 6 Combustion And Flame: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 7 Conservation Of Plants And Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 8 Cell Structure And Functions: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 9 Reproduction In Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 10 Reaching The Age Adolescence: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 11 Force And Pressure: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 12 Friction: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 13 Sound: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 14 Chemical Effects Of Electric Current: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 15 Some Natural Phenomena: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 16 Light: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 17 Stars And The Solar System: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 18 Pollution Of Air And Water: View Pdf, Copyright © 2019 All Rights Reserved, selfstudys.com, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions PDF, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions, Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 PDF, Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions. How do mosquitoes carry disease-causing micro-organisms and spread diseases? Alcohol can be converted into vinegar by the action of micro-organisms called: These micro-organisms are commonly called biological nitrogen fixers. C. malaria (a) yeast Meat and fish are preserved by using common salt. Answer: Viruses are the smallest micro-organisms which reproduce only inside the living cells of other organisms. Medium – English Medium. Answer: Social Science. How is sound produced? Mr. Rajiv Anand has opened a recurring deposit account of Rs. (a) in the form of pickles Board – CBSE. OP Malhotra Differentiation S.Chand ISC Class-12 Maths Solutions Ch-8. The houseflies feed on garbage, animal excreta and dead organic matter. Answer: Question 1. Answer: (f) Causing AIDS Lightning is a natural phenomenon which occurs in the sky and responsible for nitrogen fixation. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Answer: OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8. (c) Citrus canker is caused by bacteria. (c) by bacteria Name the disease caused by HIV. The foundation of most subjects is set up in this class only. C. growth of yeast cells This Pasteurized milk can be consumed without boiling as it is free from harmful microbes. B. streptomycein Answer: Yeast, a fungus is capable of converting sugar into alcohol and carbon dioxide. The communicable diseases can occur and spread in the following ways: Question 67 A. This antibiotic was made from the fungus called penicillium. Answer: The temperature and pressure during lightning convert atmospheric nitrogen into oxides of nitrogen. C. hydrochloric acid Chlamydomonas – Algae; solution, icse-allied publishers Female Aedes mosquito carries dengue virus. A. Alexander Fleming OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8 B.Sc.,B.Ed. A. sodium bicarbonate Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: Yeast is used for commercial production of alcohol and wine. Prokaryotic. Question 70. If not, how can they be seen? D. female anopheles mosquito Typhoid and Cholera are caused by bacteria in human beings. Advertisement. The S Chand Science Solutions for Class 8 have been explained in such a manner that it helps students to know the concepts with ease. D. spider Why are children given vaccination ? Which disease is spread by: solution. C. malaria Answer: When cooked food is kept in a cold place, then the food does not get spoiled easily. Lakhmir Singh Manjit Kaur Class 8 Science Solution. These nitrogen compounds combine with rainwater to form nitric and nitrous acid which mix with the soil. Later, he became a Professor at that college. (b) Citrus canker – Bacteria physics notes class 11 chapter 4 motion in a plane part 1. s chand s principles of physics for class xi english as. Answer: These solutions help students in exams as well as their daily homework. (B) Rhizobium bacteria Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. All mosquitoes breed in water . The Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 can help you make your concepts strong with the help of questions having a different level of difficulty. or own an. (e) Common salt has been used to preserve…………. Question 32. 1 Chapter Wise Class 8 Science NCERT Solutions for 2020-2021; 2 NCERT Solutions for Class 8 Science All Chapters; 3 CBSE Class 8 Science Solutions updated for 2020-2021; 4 Class 8 Science Important Questions for 2020-21; 5 Class 8 Science Multiple Choice Questions (MCQ ) 2020-21; 6 Class 8 Science Solutions and Main Points for NCERT Books. Answer: Manjit Kaur has been a school teacher for many years, and she has co-authored various science books. It increase the volume of dough. And when this housefly sits on uncovered food, they may transfer the pathogens and food gets contaminated. (b) Yellow vein Virus Insect mosaic of bhindi (Okra), a plant disease, is caused by virus. Malaria disease spreads through insect bites. Answer: Also name the causative micro-organisms and mode of transmission for each of these diseases. A. virus A. preparation of medicines (or drugs) Answer: They are also used in cleaning up of the environment. (ii) a ; Answer: Answer: All updated in a single page. (a) Foot and mouth disease is caused by a virus. Answer: Answer: Since the immune system of children is not strong and they are more likely to catch any disease very easily, so all the children should be vaccinated at the proper ages to provide them immunity from certain diseases. Chowdhry. Subject – Science. Answer: Question 2. Lakhmir Singh Science Class 8 Solutions: Lakhmir Singh and Manjit Kaur Science Class 8 Solutions free pdf download are available here.S Chand Science Class 8 Solutions are series of books which conforms to the NCERT syllabus. S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are prepared by SelfStudys experts in a comprehensive manner so that students can read the chapters in a detailed way. The solutions covered are easy to understand, and each step by step in the solution is described to match the students’ understanding. Answer: Name any two human diseases caused by viruses. Question 90. Draw a neat, labelled diagram of nitrogen cycle in nature. Question 52. In this process, first alcohol is produce by using yeast. Its help you to complete your homework. NCERT Solutions of Class 8 Science of Chapter 18 includes solutions of all 11 questions given in … Name two food materials which can be preserved by using sugar. A. sugar D. viruses When the housefly sits on garbage and animal excreta for feeding, then the millions of disease-causing micro-organisms present in them sticking to the body of housefly. Question 43. Leguminous plants such as beans and peas can fix nitrogen. Answer: Answer: Genius Teacher is India’s best quiz-based learning app. Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: (a) female Anopheles mosquito carries the parasite of malaria. A. ant Question 12. It is involved in the fixation of nitrogen in leguminous plants (pulses). C. housefly Diseases cholera and tuberculosis spread by housefly. Name the microbe which causes malaria disease. Answer: (a) Rust of wheat (vii) Hepatitis B When a small amount of pre-made curd is added into warm milk, then lactobacillus bacterium present in curd multiplies in milk and converts it into curd. Subject – Science. Micro-organisms are too much smaller that they cannot be seen with naked eye. It's All About Science Physics Class 8 R P Rana. (b) Micro-organisms like bacteria and fungi present in the spoilt dish of mutton causes the disease, food poisoning. (b) setting of curd C. Louis Pasteur Answer: B. housefly The main aim of writing science solutions for class 8 to help students understand … B. smallpox Keep the infected person separated from others & advice him/ her to keep a handkerchief on the nose and mouth while sneezing. (c) What is the sex of mosquito P? Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 11 . (a) The fruits which are preserved in the form of pickles by using oil and vinegar as preservative are raw mango and lemon. Question 58. Answer: Question 3. Vaccine works as follows: Question 68 B. Answer: S.Chand’s ICSE Mathematics Solution; ML Aggarwal Solution; RD Sharma Math Solution; Science Diagrams; New Learning Composite Mathematics SK Gupta Anubhuti Gangal Solution ; Lakhmir Singh Manjit Kaur Class 8 Science 11th Chapter Force and Pressure. They can be seen with a magnifying glass called microscope. It increases the volume of dough. Answer: B. sodium hydroxide Which of the following increases the fertility of soil Answer: Question 38. Name two common insects which act as carriers of disease-causing micro-organisms (or disease-causing microbes). Viruses are too much smaller in comparison to other micro-organisms. Question 71. (ii) rhizobium The parasite called Plasmodium causes a disease known as: We should not let water collect anywhere in the neighborhood. The bread dough rises because of: What precautions must be taken while taking antibiotics? For Study plan details. S. Chand's Science for Class - 8 book. Subject – Science. When the vaccine containing dead or weakened microbes is introduced into the body of a healthy person, the body fights and kills the microbes by producing some substance called antibodies. Question 83. S. Chand's Science For Class 8 For B. Sc. Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Answer: B and D as these two organisms are able to fix nitrogen gas from atmosphere to enrich soil with nitrogen compounds hence increasing fertility of soil. The S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are crafted by subject experts who have vast knowledge over the subject. Page Contents. The Solutions are based on the latest CBSE syllabus pattern. B. protozoan Name any two (C) Spirogyra algae Answer: Answer: … NCERT Solutions for class 9 provide you with a quick way to complete your homework. Answer: Question 66 A. (v) A protozoan Practice Questions. Author Name – Lakhmir Singh Manjit Kaur. C. dragonfly (i) e; Name the instrument (or device) which is needed to see the micro-organisms. S Chand ICSE Maths Solutions for Class 10 Chapter 2 Banking Exercise 2. Amoeba, Lactobacillus, Chlamydomonas, Penicillium, Yeast, HIV These NCERT Solutions for Class 6 Social Science help you understand concepts, events, etc. Antibiotics are not effective against ‘common cold’ and ‘flu’ as these are caused by viruses. Vegetables like methi leaves and spinach are preserved by sun-drying method in our homes. Answer: Mosquito repellant creams should be applied on the exposed parts of the body. (vi) f ; Question 9. Question 6. HIV causes AIDS disease. Answer: Answer: C. fermentation The two ways in which in which nitrogen gas of the atmosphere can be ‘fixed’ in nature to get nitrogen compounds in the soil are: (i) Nitrogen fixation by lightning: Lightning also helps in fixing atmospheric nitrogen into the soil. B. typhoid (b) (i) Female Anopheles mosquito (ii) Plasmodium (iii) Malaria What is meant by fermentation? C. bacterium State the causative micro-organisms and modes of transmission of the following human diseases : S Chand Class 8 need not be intimidating for you. Female Aedes mosquito acts as carrier of dengue virus. 400 per month for 20 month in a bank. (b) Viruses – (I) HIV (II) Tobacco Mosaic virus (TMV) Name any two human diseases caused by fungi. Edward Jenner discovered the vaccine for smallpox in 1978. A. bacteria Excel in academics with NCERT Solutions for CBSE Class 8 Science Chapter 6 Combustion and Flame. Scoring better marks in the examinations is important for CBSE Class 8th students. Question 29. Question 53. B. a protozoan Name the insect which carries dengue virus. D. fungus Answer: Question 50. B. fungi Answer: Question 64. Science for Tenth Class Part 2 (Hindi) Chemistry Book-10 Lakhmir Singh. Penicillium – Fungi ; All the questions has been solved by experts and explained in detail. The micro-organism which is capable of converting sugar into alcohol and carbon dioxide is: They just reproduce. Blue green algae fix the atmospheric nitrogen to enrich soil with nitrogen and hence, increase soil fertility. S.Chand’s Science Book-8 B K Gowel. In Chapter 8 of Grade 8 Science, we have to study about few synthetic fibres like Nylon, Rayon or Artificial Silk, Polyester and Acrylic.We should know about the properties of these synthetic fibres. Here are some reasons why it would be helpful: The Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions offers various advantages to students who are appearing for the examination. Proper sanitation should be maintained in the kitchen. These are as follows: Question 68 A. The acetobacter bacteria is then added to alcohol. Answer: Senior Teacher of Science in reputed school of Directorate of Education, Delhi. Important Keywords. (a) Alcohol is produced with the help of ………… An antibiotic Penicillin was extracted from fungus (mould) by Alexander Fleming in 1929. (iii) Chickenpox Social Science. Name the micro-organisms present in the soil and in the root nodules of leguminous plants which can fix atmospheric nitrogen. Question 44 B. The carrier of malaria causing protozoan called plasmodium is female anopheles mosquito. State the beneficial effects (or usefulness) of micro-organisms in our lives. (d) Female, RD Sharma Class 11 Solutions Free PDF Download, NCERT Solutions for Class 12 Computer Science (Python), NCERT Solutions for Class 12 Computer Science (C++), NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Micro Economics, NCERT Solutions for Class 12 Macro Economics, NCERT Solutions for Class 12 Entrepreneurship, NCERT Solutions for Class 12 Political Science, NCERT Solutions for Class 11 Computer Science (Python), NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Entrepreneurship, NCERT Solutions for Class 11 Political Science, NCERT Solutions for Class 11 Indian Economic Development, NCERT Solutions for Class 10 Social Science, NCERT Solutions For Class 10 Hindi Sanchayan, NCERT Solutions For Class 10 Hindi Sparsh, NCERT Solutions For Class 10 Hindi Kshitiz, NCERT Solutions For Class 10 Hindi Kritika, NCERT Solutions for Class 10 Foundation of Information Technology, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 9 Foundation of IT, PS Verma and VK Agarwal Biology Class 9 Solutions, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10. The S Chand Class 8 Science Solutions chapter-wise is given below. Education Franchise × Contact Us. Question 88. Acetobacter bacteria convert alcohol into acetic acid (or vinegar). Malaria and dengue spread by mosquitoes. Question 55 A. Yeast – Fungi ; After consuming a dish of mutton, a person complained of nausea, vomiting, diarrhoea, and pain in the abdomen. This pdf is available for student for free to download. (ii) Measles S Chand Science Class 8 Solutions Chapter 13 Sound Lakhmir Singh Science Class 8 Chapter 13 Very Short Answer Type Questions Question 1. A vaccine is a special kind of preparation which provides immunity against a particular disease. The process of conversion of sugar into alcohol is known as fermentation. The houseflies feed on garbage, animal excreta and dead organic matter. C. fermentation State an important function performed by blue-green algae. Published: 2016. Lakhmir Singh Solutions for CBSE Class 8, 9, 10 for the academic year 2020-21 are provided at BYJU’S. (f) milk (a) Name (i) mosquito P, and (ii) disease Question The questions given in S Chand Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. (f) The food material which is preserved by pasteurization is …………….. of Pages: 352. We will help as soon as possible. Yeast is used in baking industry for making bread. (a) Rust of wheat – Fungi They carry disease-causing micro-organisms (microbes) inside its body. Question 36. Question 81. Question 4. If student do exam preparation from these reference book, this book help the student to score very good marks. Question 2. Question 37. (a) Foot and mouth disease from Delhi University. (iii) Lactobacillus D. dengue A. sodium metabisulphate Name any two human diseases caused by bacteria. (a) by fungi A. cholera And the viruses do not have cells but live in the cells of living beings. Answer: Why are antibiotics not effective against ‘common cold’ and ‘flu’? Board – CBSE. Class – 8. Name one disease which spreads through infected food or water. Question 33. B. fungus Which micro-organism is utilized in making curd from milk ? Name the insect which is the carrier of parasite of malaria. So, when all your chapters are crystal clear, scoring higher marks in the examination will become much easier. Name any five human diseases caused by micro-organisms. Answer: C. protozoan (b) viruses Of these, the bacterium Lactobacillus promotes the formation of curd. Students who aspire to make a career in the medical must prepare for this subject efficiently to score good marks in the Class 8 Board examination. About the book. B. housefly Binding: Paper Back. Answer: Bubbles of the gas fill the dough and increase its volume. B. Edward jenner Answer: An object should vibrate in order to be table to […] We should keep our surrounding clean and dry. Question 73. Answer: What is their function? Answer: C. protozoa These NCERT Solutions for Class 6 Social Science are also the best source of self-analysis of results for students. From Delhi University in yr 1970. This book really help the 9th Class Students in Science Examination. Question 20. Question 66 B. Question 47 B. B. alcohol. Question 14. Answer: These solutions will provide you with an edge over the others because S Chand Biology Class 10 Solutions are concise and to the point. ICSE - goyal brothers Develop your conceptual skills during revision with TopperLearning’s model solutions by expert educators. Question 61. Question 35. Jams and jellies are preserved by using sugar. The process of conversation of sugar into alcohol is known as fermentation. Tuberculosis disease spreads by breathing in air containing micro-organisms. Question 31. Several diseases including tuberculosis, smallpox, cholera and hepatitis can be prevented by vaccination. Why should we not let water collect anywhere in the neighbourhood? (d) What is the sex of mosquito r? Diseases athlete’s food and ring worm are caused by fungi. The micro-organisms which can reproduce and multiply only cells of other organisms are: This lactic acid then converts milk into curd. Class – 8 (Eight). Answer: Question 28. The questions given in S Chand Biology Class 10 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. The carrier of malaria causing protozoan is: This antibiotic was made from the fungus called penicillium. Microscope is needed to see the micro-organisms. The process of pasteurization for the preservation of milk is discovered by Louis Pasteur. D. an alga (c) protozoa Click here to download chemistry Click here to download physics ️ About The Authors ⬅️ Lakhmir Singh has extensive experience teaching science subjects, and has written many books on the three main branches of science - physics, chemistry and biology.He graduated with a Physics (Honours) degree from the Hindu College, and later obtained an M.Sc from Delhi University. Question 30. Answer: Lakhmir Singh Science Solutions Class 8 Chapter, Lakhmir singh and manjit kaur Some of the precautions should be taken while taking antibiotics which are as follows: Question 49. (iii) b; (d) Cholera is caused by………….. Amoeba – Protozoa ; (d) bacteria Stormcloaks Or Imperials, Nissin Raoh Tonkotsu Review, Ceramic Paint Hobbycraft, Painting Over Gold Leaf, Best Music Libraries To Submit To, Mansoor Ali Khan Show, National Exotic Car Rental, Murshidabad Ration Dealer List, Laramie County Jail, Ios Development Course Vancouver, Preston Pruitt Funeral Home Danville Ky Obituaries, Comparison Essay Title Generator, ">

's chand science class 8 solutions chapter 2

Question 26. Streptomycin and erythromycin are two commonly known antibiotics which are made from fungi and bacteria. Question 5. B. sodium hydroxide They do not show most of the characteristics of the living organisms like respiration. Chapter 3 – Synthetic Fibres And Plastics. Pratibha Nath "Pratibha Nath is the daughter of the late Dr. K.C. (v) Cholera State two ways in which nitrogen gas of the atmosphere can be ‘fixed’ in nature to get nitrogen compounds in the soil. Question 1. Author Name – Lakhmir Singh Manjit Kaur. When yeast is mixed in dough for making bread, the yeast reproduces rapidly and produces carbon dioxide during respiration. How does it make the dough rise? Name some of the preservatives which are used in the preservation of fruits and vegetables as pickles. * RD Sharma Solutions * RS Aggarwal Solutions * S.Chand Solutions Free App In which you can read All 8th class RD Sharma ,S.Chand & RS Aggarwal Solutions with proper diagram and accurate answers. Question 44 A. Home > School Books > Social Science > S. Chand’s Social Sciences for Class-8 S. Chand’s Social Sciences for Class-8 J C Aggarwal & N.K. Science is one of the most important subjects in Class 8 CBSE Board examination. Publisher: S.Chand & Company Pvt.Ltd. Which of the following cannot be used as a food preservative? Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Alcohol can be converted into vinegar by the action of micro-organisms called bacteria. We preserve cooked food in the refrigerator at home. The spreading of diseases by mosquitoes can be prevented by following ways: Question 46 A. Answer: Name two fruits which are preserved: In Class 8 Science Chapter 3, the descriptions of man-made fires and their uses are given. (iv) Yeast The dilute solution of acetic acid is called vinegar. Which of the following is not a communicable disease? (d) algae, and (vii) g, Question 93. Class 9 - Maths+Science; Class 9 - Science; Class 9 - Mathematics; Class 9 - Science+Maths Video Paper Solutions; Class 10. Name one plant disease each caused: Answer: Which micro-organism converts sugar into alcohol during fermentation? Question 78. (b) Name (i) mosquito R (ii) protozoan S, and (iii) disease T. We Provide Step by Step Answer of Exe-8(a), Exe-8(b), Exe-8(c), with Chapter Test of S Chand OP Malhotra Maths . Answer: Next it is chilled very fast to prevent bacteria from growing. Answer: (vii) penicillium Viruses differ from other micro-organisms because they are too much smaller in comparison to other micro-organisms. C. a fungus Name one disease which spreads by breathing in air containing micro-organisms. Question 1. D. measles Answer: The parasite called Plasmodium causes a disease known as malaria. s chand class xii physics s chand flipkart com. D. increasing the fertility of soil Question 76. Some bacteria and blue green algae present in the soil and rhizobium present in the root nodules of leguminous plants can fix atmospheric nitrogen. (b) What causes this disease? (d) Algae – (I) Spirogyra (II) Chlamydomonas (c) Yellow vein mosaic of bhindi (Okra) They do not show most of the characteristics of the living organisms like respiration. Thus, micro-organisms decompose the harmful and smelly dead remains of plants and animals into harmless materials and thereby clean up the environment. Milk is turned into curd by bacteria. Distinguish between prokaryotic and eukaryotic cells. (b) Anthrax disease is caused by a bacterium. Question 57. Class 8 Maths Chapter 2 Linear Equations in One Variable Exercise 2.1 Questions with Solutions to help you to revise complete Syllabus and Score More marks. Sodium benzoate and sodium metabisulphite are common preservatives. Name the instrument (or device) which is needed to see the micro-organisms. The malaria disease is caused by a protozoan called plasmodium. Answer: Hey guys,, How's your studies going on? S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are considered an extremely helpful source for exam preparation. Lakhmir Singh and Manjit Kaur Science solution: … Name one ‘biological nitrogen-fixer’. S.Chand’s Science Book-8 B K Gowel. Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. Question 77. It lives in the root nodules of leguminous plants such as beans and peas, with which it has a symbiotic relationship. Question 11. Protozoa Plasmodium causes malaria disease. Question 42. They just reproduce. s chand principles of physics class 11 b bag. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation? How do micro-organisms help in increasing soil fertility? C. sodium benzoate Question 27. Certain microbes are also used in the biological treatment of sewage and industrial effluents. What is the name of micro-organisms which reproduce only inside the living cells of other organisms ? Maintain personal hygiene and good sanitary habits. And the working mechanism of the antibiotics is to break the cell wall and attack on the bacteria. 2 Comments. Timely vaccination against diseases should also be taken. (b) female Aedes mosquito? Answer: What is the name of micro-organisms which reproduce only inside the living … D. Kneading The carrier of parasite of malaria is Female Anopheles mosquito. (a) bacteria Question 74. All the chapters are divided into clear and concise manner so that it becomes easy for you to understand the concepts and solve the questions. A. female anopheles These acids are utilized by various organisms. Name the fungus. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Answer: Answer: Question 67 B. Question 72. Answer: (a) (i) Female Aedes mosquito (ii) Dengue Answer: Carbon dioxide is the gas which is mainly responsible for causing global warming. You will find all the solutions in a detailed manner and without any mistake. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Yeast converts sugar into alcohol during fermentation. Name the bacterium which converts milk into curd: Answer: The first antibiotic called penicillin was extracted from: (D) Blue-green algae B. virus I hope you are doing well ! Question 89. Name two leguminous plants which can fix nitrogen. Question 21. Name any two communicable diseases. We provide its users access to a profuse supply of questions with their solutions. and ………… for ages. Answer: Which of the two spreads dengue: mosquito or housefly ? A person must finish the full course of antibiotics prescribed by the doctor. Answer: C. cholera State any two ways of preventing diseases spread by houseflies. (c) Baking of Bread The mosquito P is a carrier of virus and spreads a disease Question Another mosquito R is the carrier of protozoan S and spreads s disease called T. When this contaminated food is consumed by a person, pathogens enter into his body and causes various diseases. Lakhmir Singh Science Solutions Class 8 Chapter 1 Crop Production And Management: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 2 Micro-Organisms Friends And Foe: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 3 Synthetic Fibers And Plastics: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 4 Materials Metals And Non-Metals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 5 Coal And Petroleum: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 6 Combustion And Flame: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 7 Conservation Of Plants And Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 8 Cell Structure And Functions: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 9 Reproduction In Animals: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 10 Reaching The Age Adolescence: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 11 Force And Pressure: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 12 Friction: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 13 Sound: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 14 Chemical Effects Of Electric Current: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 15 Some Natural Phenomena: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 16 Light: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 17 Stars And The Solar System: View Pdf, Lakhmir Singh Science Solutions Class 8 Chapter 18 Pollution Of Air And Water: View Pdf, Copyright © 2019 All Rights Reserved, selfstudys.com, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions PDF, S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions, Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 PDF, Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions. How do mosquitoes carry disease-causing micro-organisms and spread diseases? Alcohol can be converted into vinegar by the action of micro-organisms called: These micro-organisms are commonly called biological nitrogen fixers. C. malaria (a) yeast Meat and fish are preserved by using common salt. Answer: Viruses are the smallest micro-organisms which reproduce only inside the living cells of other organisms. Medium – English Medium. Answer: Social Science. How is sound produced? Mr. Rajiv Anand has opened a recurring deposit account of Rs. (a) in the form of pickles Board – CBSE. OP Malhotra Differentiation S.Chand ISC Class-12 Maths Solutions Ch-8. The houseflies feed on garbage, animal excreta and dead organic matter. Answer: Question 1. Answer: (f) Causing AIDS Lightning is a natural phenomenon which occurs in the sky and responsible for nitrogen fixation. AWARENESS SCIENCE FOR CLASS 8 Lakhmir Singh. Answer: OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8. (c) Citrus canker is caused by bacteria. (c) by bacteria Name the disease caused by HIV. The foundation of most subjects is set up in this class only. C. growth of yeast cells This Pasteurized milk can be consumed without boiling as it is free from harmful microbes. B. streptomycein Answer: Yeast, a fungus is capable of converting sugar into alcohol and carbon dioxide. The communicable diseases can occur and spread in the following ways: Question 67 A. This antibiotic was made from the fungus called penicillium. Answer: The temperature and pressure during lightning convert atmospheric nitrogen into oxides of nitrogen. C. hydrochloric acid Chlamydomonas – Algae; solution, icse-allied publishers Female Aedes mosquito carries dengue virus. A. Alexander Fleming OP Malhotra Triangles Class-9 S.Chand ICSE Maths Ch-8 B.Sc.,B.Ed. A. sodium bicarbonate Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: Yeast is used for commercial production of alcohol and wine. Prokaryotic. Question 70. If not, how can they be seen? D. female anopheles mosquito Typhoid and Cholera are caused by bacteria in human beings. Advertisement. The S Chand Science Solutions for Class 8 have been explained in such a manner that it helps students to know the concepts with ease. D. spider Why are children given vaccination ? Which disease is spread by: solution. C. malaria Answer: When cooked food is kept in a cold place, then the food does not get spoiled easily. Lakhmir Singh Manjit Kaur Class 8 Science Solution. These nitrogen compounds combine with rainwater to form nitric and nitrous acid which mix with the soil. Later, he became a Professor at that college. (b) Citrus canker – Bacteria physics notes class 11 chapter 4 motion in a plane part 1. s chand s principles of physics for class xi english as. Answer: These solutions help students in exams as well as their daily homework. (B) Rhizobium bacteria Streptomycin, tetracycline and erythromycin are some of the commonly known antibiotics which are made from fungi and bacteria. All mosquitoes breed in water . The Lakhmir Singh Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 can help you make your concepts strong with the help of questions having a different level of difficulty. or own an. (e) Common salt has been used to preserve…………. Question 32. 1 Chapter Wise Class 8 Science NCERT Solutions for 2020-2021; 2 NCERT Solutions for Class 8 Science All Chapters; 3 CBSE Class 8 Science Solutions updated for 2020-2021; 4 Class 8 Science Important Questions for 2020-21; 5 Class 8 Science Multiple Choice Questions (MCQ ) 2020-21; 6 Class 8 Science Solutions and Main Points for NCERT Books. Answer: Manjit Kaur has been a school teacher for many years, and she has co-authored various science books. It increase the volume of dough. And when this housefly sits on uncovered food, they may transfer the pathogens and food gets contaminated. (b) Yellow vein Virus Insect mosaic of bhindi (Okra), a plant disease, is caused by virus. Malaria disease spreads through insect bites. Answer: Also name the causative micro-organisms and mode of transmission for each of these diseases. A. virus A. preparation of medicines (or drugs) Answer: They are also used in cleaning up of the environment. (ii) a ; Answer: Answer: All updated in a single page. (a) Foot and mouth disease is caused by a virus. Answer: Answer: Since the immune system of children is not strong and they are more likely to catch any disease very easily, so all the children should be vaccinated at the proper ages to provide them immunity from certain diseases. Chowdhry. Subject – Science. Answer: Question 2. Lakhmir Singh Science Class 8 Solutions: Lakhmir Singh and Manjit Kaur Science Class 8 Solutions free pdf download are available here.S Chand Science Class 8 Solutions are series of books which conforms to the NCERT syllabus. S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are prepared by SelfStudys experts in a comprehensive manner so that students can read the chapters in a detailed way. The solutions covered are easy to understand, and each step by step in the solution is described to match the students’ understanding. Answer: Name any two human diseases caused by viruses. Question 90. Draw a neat, labelled diagram of nitrogen cycle in nature. Question 52. In this process, first alcohol is produce by using yeast. Its help you to complete your homework. NCERT Solutions of Class 8 Science of Chapter 18 includes solutions of all 11 questions given in … Name two food materials which can be preserved by using sugar. A. sugar D. viruses When the housefly sits on garbage and animal excreta for feeding, then the millions of disease-causing micro-organisms present in them sticking to the body of housefly. Question 43. Leguminous plants such as beans and peas can fix nitrogen. Answer: Answer: Genius Teacher is India’s best quiz-based learning app. Lakhmir Singh and Manjit Kaur class 8 science textbook solutions hold a high regard among students of CBSE Class 8 students. Answer: (a) female Anopheles mosquito carries the parasite of malaria. A. ant Question 12. It is involved in the fixation of nitrogen in leguminous plants (pulses). C. housefly Diseases cholera and tuberculosis spread by housefly. Name the microbe which causes malaria disease. Answer: (a) Rust of wheat (vii) Hepatitis B When a small amount of pre-made curd is added into warm milk, then lactobacillus bacterium present in curd multiplies in milk and converts it into curd. Subject – Science. Micro-organisms are too much smaller that they cannot be seen with naked eye. It's All About Science Physics Class 8 R P Rana. (b) Micro-organisms like bacteria and fungi present in the spoilt dish of mutton causes the disease, food poisoning. (b) setting of curd C. Louis Pasteur Answer: B. housefly The main aim of writing science solutions for class 8 to help students understand … B. smallpox Keep the infected person separated from others & advice him/ her to keep a handkerchief on the nose and mouth while sneezing. (c) What is the sex of mosquito P? Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 11 . (a) The fruits which are preserved in the form of pickles by using oil and vinegar as preservative are raw mango and lemon. Question 58. Answer: Question 3. Vaccine works as follows: Question 68 B. Answer: S.Chand’s ICSE Mathematics Solution; ML Aggarwal Solution; RD Sharma Math Solution; Science Diagrams; New Learning Composite Mathematics SK Gupta Anubhuti Gangal Solution ; Lakhmir Singh Manjit Kaur Class 8 Science 11th Chapter Force and Pressure. They can be seen with a magnifying glass called microscope. It increases the volume of dough. Answer: B. sodium hydroxide Which of the following increases the fertility of soil Answer: Question 38. Name two common insects which act as carriers of disease-causing micro-organisms (or disease-causing microbes). Viruses are too much smaller in comparison to other micro-organisms. Question 71. (ii) rhizobium The parasite called Plasmodium causes a disease known as: We should not let water collect anywhere in the neighborhood. The bread dough rises because of: What precautions must be taken while taking antibiotics? For Study plan details. S. Chand's Science for Class - 8 book. Subject – Science. When the vaccine containing dead or weakened microbes is introduced into the body of a healthy person, the body fights and kills the microbes by producing some substance called antibodies. Question 83. S. Chand's Science For Class 8 For B. Sc. Class 8 Science Lakhmir Singh Book Solution Short Questions, Long Questions, MCQ Questions Solution and discussing. Answer: B and D as these two organisms are able to fix nitrogen gas from atmosphere to enrich soil with nitrogen compounds hence increasing fertility of soil. The S Chand Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions are crafted by subject experts who have vast knowledge over the subject. Page Contents. The Solutions are based on the latest CBSE syllabus pattern. B. protozoan Name any two (C) Spirogyra algae Answer: Answer: … NCERT Solutions for class 9 provide you with a quick way to complete your homework. Answer: Question 66 A. (v) A protozoan Practice Questions. Author Name – Lakhmir Singh Manjit Kaur. C. dragonfly (i) e; Name the instrument (or device) which is needed to see the micro-organisms. S Chand ICSE Maths Solutions for Class 10 Chapter 2 Banking Exercise 2. Amoeba, Lactobacillus, Chlamydomonas, Penicillium, Yeast, HIV These NCERT Solutions for Class 6 Social Science help you understand concepts, events, etc. Antibiotics are not effective against ‘common cold’ and ‘flu’ as these are caused by viruses. Vegetables like methi leaves and spinach are preserved by sun-drying method in our homes. Answer: Mosquito repellant creams should be applied on the exposed parts of the body. (vi) f ; Question 9. Question 6. HIV causes AIDS disease. Answer: Answer: C. fermentation The two ways in which in which nitrogen gas of the atmosphere can be ‘fixed’ in nature to get nitrogen compounds in the soil are: (i) Nitrogen fixation by lightning: Lightning also helps in fixing atmospheric nitrogen into the soil. B. typhoid (b) (i) Female Anopheles mosquito (ii) Plasmodium (iii) Malaria What is meant by fermentation? C. bacterium State the causative micro-organisms and modes of transmission of the following human diseases : S Chand Class 8 need not be intimidating for you. Female Aedes mosquito acts as carrier of dengue virus. 400 per month for 20 month in a bank. (b) Viruses – (I) HIV (II) Tobacco Mosaic virus (TMV) Name any two human diseases caused by fungi. Edward Jenner discovered the vaccine for smallpox in 1978. A. bacteria Excel in academics with NCERT Solutions for CBSE Class 8 Science Chapter 6 Combustion and Flame. Scoring better marks in the examinations is important for CBSE Class 8th students. Question 29. Question 53. B. a protozoan Name the insect which carries dengue virus. D. fungus Answer: Question 50. B. fungi Answer: Question 64. Science for Tenth Class Part 2 (Hindi) Chemistry Book-10 Lakhmir Singh. Penicillium – Fungi ; All the questions has been solved by experts and explained in detail. The micro-organism which is capable of converting sugar into alcohol and carbon dioxide is: They just reproduce. Blue green algae fix the atmospheric nitrogen to enrich soil with nitrogen and hence, increase soil fertility. S.Chand’s Science Book-8 B K Gowel. In Chapter 8 of Grade 8 Science, we have to study about few synthetic fibres like Nylon, Rayon or Artificial Silk, Polyester and Acrylic.We should know about the properties of these synthetic fibres. Here are some reasons why it would be helpful: The Lakhmir Singh Class 8 Science Chapter 2 Micro Organisms Friends And Foe Solutions offers various advantages to students who are appearing for the examination. Proper sanitation should be maintained in the kitchen. These are as follows: Question 68 A. The acetobacter bacteria is then added to alcohol. Answer: Senior Teacher of Science in reputed school of Directorate of Education, Delhi. Important Keywords. (a) Alcohol is produced with the help of ………… An antibiotic Penicillin was extracted from fungus (mould) by Alexander Fleming in 1929. (iii) Chickenpox Social Science. Name the micro-organisms present in the soil and in the root nodules of leguminous plants which can fix atmospheric nitrogen. Question 44 B. The carrier of malaria causing protozoan called plasmodium is female anopheles mosquito. State the beneficial effects (or usefulness) of micro-organisms in our lives. 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The S Chand Class 8 Science Solutions chapter-wise is given below. Education Franchise × Contact Us. Question 88. Acetobacter bacteria convert alcohol into acetic acid (or vinegar). Malaria and dengue spread by mosquitoes. Question 55 A. Yeast – Fungi ; After consuming a dish of mutton, a person complained of nausea, vomiting, diarrhoea, and pain in the abdomen. This pdf is available for student for free to download. (ii) Measles S Chand Science Class 8 Solutions Chapter 13 Sound Lakhmir Singh Science Class 8 Chapter 13 Very Short Answer Type Questions Question 1. A vaccine is a special kind of preparation which provides immunity against a particular disease. The process of conversion of sugar into alcohol is known as fermentation. The houseflies feed on garbage, animal excreta and dead organic matter. C. fermentation State an important function performed by blue-green algae. Published: 2016. Lakhmir Singh Solutions for CBSE Class 8, 9, 10 for the academic year 2020-21 are provided at BYJU’S. (f) milk (a) Name (i) mosquito P, and (ii) disease Question The questions given in S Chand Science Chapter 2 Micro Organisms Friends And Foe Solutions Class 8 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. (f) The food material which is preserved by pasteurization is …………….. of Pages: 352. We will help as soon as possible. Yeast is used in baking industry for making bread. (a) Rust of wheat – Fungi They carry disease-causing micro-organisms (microbes) inside its body. Question 36. Question 81. Question 4. If student do exam preparation from these reference book, this book help the student to score very good marks. Question 2. Question 37. (a) Foot and mouth disease from Delhi University. (iii) Lactobacillus D. dengue A. sodium metabisulphate Name any two human diseases caused by bacteria. (a) by fungi A. cholera And the viruses do not have cells but live in the cells of living beings. Answer: Why are antibiotics not effective against ‘common cold’ and ‘flu’? Board – CBSE. Class – 8. Name one disease which spreads through infected food or water. Question 33. B. fungus Which micro-organism is utilized in making curd from milk ? Name the insect which is the carrier of parasite of malaria. So, when all your chapters are crystal clear, scoring higher marks in the examination will become much easier. Name any five human diseases caused by micro-organisms. Answer: C. protozoan (b) viruses Of these, the bacterium Lactobacillus promotes the formation of curd. Students who aspire to make a career in the medical must prepare for this subject efficiently to score good marks in the Class 8 Board examination. About the book. B. housefly Binding: Paper Back. Answer: Bubbles of the gas fill the dough and increase its volume. B. Edward jenner Answer: An object should vibrate in order to be table to […] We should keep our surrounding clean and dry. Question 73. Answer: What is their function? Answer: C. protozoa These NCERT Solutions for Class 6 Social Science are also the best source of self-analysis of results for students. From Delhi University in yr 1970. This book really help the 9th Class Students in Science Examination. Question 20. Question 66 B. Question 47 B. B. alcohol. Question 14. Answer: These solutions will provide you with an edge over the others because S Chand Biology Class 10 Solutions are concise and to the point. ICSE - goyal brothers Develop your conceptual skills during revision with TopperLearning’s model solutions by expert educators. Question 61. Question 35. Jams and jellies are preserved by using sugar. The process of conversation of sugar into alcohol is known as fermentation. Tuberculosis disease spreads by breathing in air containing micro-organisms. Question 31. Several diseases including tuberculosis, smallpox, cholera and hepatitis can be prevented by vaccination. Why should we not let water collect anywhere in the neighbourhood? (d) What is the sex of mosquito r? Diseases athlete’s food and ring worm are caused by fungi. The micro-organisms which can reproduce and multiply only cells of other organisms are: This lactic acid then converts milk into curd. Class – 8 (Eight). Answer: Question 28. The questions given in S Chand Biology Class 10 are prepared in accordance with CBSE Latest Syllabus, thus holding higher probabilities of appearing on CBSE question papers. The carrier of malaria causing protozoan is: This antibiotic was made from the fungus called penicillium. Microscope is needed to see the micro-organisms. The process of pasteurization for the preservation of milk is discovered by Louis Pasteur. D. an alga (c) protozoa Click here to download chemistry Click here to download physics ️ About The Authors ⬅️ Lakhmir Singh has extensive experience teaching science subjects, and has written many books on the three main branches of science - physics, chemistry and biology.He graduated with a Physics (Honours) degree from the Hindu College, and later obtained an M.Sc from Delhi University. Question 30. Answer: Lakhmir Singh Science Solutions Class 8 Chapter, Lakhmir singh and manjit kaur Some of the precautions should be taken while taking antibiotics which are as follows: Question 49. (iii) b; (d) Cholera is caused by………….. Amoeba – Protozoa ; (d) bacteria

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