This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > English > Fire Friend And Foe > Class 7 English Chapter 10 Fire Friend And Foe – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 English Chapter 10 Fire Friend And Foe Quiz 5 (51 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The microorganism which contains chlorophyll A) Virus. B) Fungus. C) Algae. D) All of the above. Show Answer Correct Answer: C) Algae. 2. Question 5:The process of conversion of sugar into alcohol is known as ..... A) Fermentation. B) Fusion. C) Fixation. D) Budding. Show Answer Correct Answer: A) Fermentation. 3. What are antibiotics? A) Substances released by the body, when it detects harmful substances. B) Antibiotics are chemicals that kill or inhibit the growth of microorganisms. C) Pathogens that enter our body. D) Both A & B. Show Answer Correct Answer: B) Antibiotics are chemicals that kill or inhibit the growth of microorganisms. 4. People suffering from the effects of smoke should be given before sending them to hospital A) First aid. B) Energy drink. C) Biscuit milk. D) Injection. Show Answer Correct Answer: A) First aid. 5. Which of the following is the basic building block of living organisms? A) Cell. B) Organ system. C) Organelle. D) Nucleus. Show Answer Correct Answer: A) Cell. 6. What is the name of a bacterium that helps in the formation of curd. A) Lactobacillus. B) Yeast. C) All the above. D) None of the above. Show Answer Correct Answer: A) Lactobacillus. 7. Can atmospheric nitrogen be used by plants directly? A) True. B) False. C) I don't know. D) None of the above. Show Answer Correct Answer: B) False. 8. TRUE OR FALSE:Salt is used as a food preservative. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 9. Every duel burns only when it reaches a A) A peak point. B) Fire point. C) Certain temperature. D) High altitude. Show Answer Correct Answer: C) Certain temperature. 10. Who are firefighters A) Who play football. B) Who dance. C) Who extinguish fire. D) None of these. Show Answer Correct Answer: C) Who extinguish fire. 11. Disease causing microbes are called A) Parasites. B) Pathogens. C) Microbes. D) Protozoa. Show Answer Correct Answer: B) Pathogens. 12. An infectious disease is ..... A) Spread from person to person. B) Spread from animal to animal. C) Caused only by bacteria. D) Caused only by viruses. Show Answer Correct Answer: A) Spread from person to person. 13. What describes the relationship of microorganisms to humans? A) Harmful. B) Useful. C) Both harmful and useful. D) Nethier harmful nor useful. Show Answer Correct Answer: C) Both harmful and useful. 14. Substance used to produce immunity against diseases in the living body is called A) Antibody. B) Antigen. C) Immune. D) Vaccine. Show Answer Correct Answer: D) Vaccine. 15. What is the weight of the ball? A) 5 1/2 to 5 3/4 ounces. B) 8 4/5 to 8 3/6 ounces. C) All the above. D) None of the above. Show Answer Correct Answer: A) 5 1/2 to 5 3/4 ounces. 16. Bacteriophage is a A) Bacteria. B) Funguss. C) Protozoan. D) Virus. Show Answer Correct Answer: D) Virus. 17. It is the removal of the moisture content of the food. A) Drying. B) Freezing. C) Salting. D) None of the above. Show Answer Correct Answer: A) Drying. 18. ..... helps us digest our food and convert it into simple form. A) Fungi. B) Protozoa. C) Bacteria. D) Algae. Show Answer Correct Answer: C) Bacteria. 19. What is the causative microorganism of hepatitis-A A) Bacteria. B) Protozoa. C) Virus. D) None of these. Show Answer Correct Answer: C) Virus. 20. MeaningSmothered A) Things needed. B) Lack of air. C) Put out. D) Groups. Show Answer Correct Answer: B) Lack of air. 21. Three things needed to start and put out fire A) Oxygen, carbon and hydrogen. B) Oxygen, heat and carbon. C) Fuel, heat and oxygen. D) Oxygen, carbon and fuel. Show Answer Correct Answer: C) Fuel, heat and oxygen. 22. Which of the following terms is given to the microorganisms that cause diseases? 1) Antigens 2) Antibodies 3) Pathogens 4) Vectors A) 3. B) 1. C) 2. D) 4. Show Answer Correct Answer: A) 3. 23. Penicillin was introduced by which scientist? A) Edward Jenner. B) Robert Hooke. C) Alexander Fleming. D) Robert Koch. Show Answer Correct Answer: C) Alexander Fleming. 24. Our atmosphere consists of ..... % nitrogen gas A) 78%. B) 87%. C) 75%. D) 85%. Show Answer Correct Answer: A) 78%. 25. Which organisms are microscopic and reproduce on host cell? A) Viruses. B) Bacteria. C) Protozoa. D) Algae. Show Answer Correct Answer: A) Viruses. 26. Which of the following is/are produced by using bacteria? 1) Antibiotics 2) Cheese 3) Yoghurt 4) All of these A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: D) 4. 27. Question 9:The microorganisms that cause diseases in human beings, plants and animals are called ..... A) Pathogens. B) Carriers. C) Spirogyra. D) Antibodies. Show Answer Correct Answer: A) Pathogens. 28. Bacilli are the bacteria that are A) Curved shaped. B) Spiral. C) Rod shaped. D) Comma shaped. Show Answer Correct Answer: C) Rod shaped. 29. The synonym (same meaning) of burn is A) Light. B) Blaze. C) Flame. D) All the above. Show Answer Correct Answer: D) All the above. 30. The device that is used to observe microorganisms is called: A) Microscope. B) Telescope. C) Stethoscope. D) None. Show Answer Correct Answer: A) Microscope. 31. Fungi consist of two main groups of organisms ..... and moulds. A) Yeast. B) Algae. C) Bread. D) None of these options. Show Answer Correct Answer: A) Yeast. 32. Name the bacteria which promotes the formation of curd A) Clostridium. B) Lactobacillus. C) Cyanobacteria. D) Rhizobium. Show Answer Correct Answer: B) Lactobacillus. 33. Question 2:Cold, influenza and most cough are caused by ..... ? A) Bacteria. B) Viruses. C) Fungi. D) None of these. Show Answer Correct Answer: B) Viruses. 34. ..... are parasites, which means they can only survive inside the cells of other living things. A) Viruses. B) Protozoa. C) Algae. D) Fungi. Show Answer Correct Answer: A) Viruses. 35. ..... fix nitrogen directly from air and enhance fertility of soil. A) Chlorophyll. B) Rhizobium. C) I don't know. D) Blue green algae. Show Answer Correct Answer: D) Blue green algae. 36. Common cold is caused by which type of microbe? A) Algae. B) Fungi. C) Virus. D) Bacteria. Show Answer Correct Answer: C) Virus. 37. Why do you need to take care when using a CO$_{2}$ extinguisher? A) The bottle and nozzle can freeze when operating. B) Using in a confined space can cause unconciousness. C) Flammable liquids can re-ignite. D) All of these. Show Answer Correct Answer: D) All of these. 38. What do bacteria and viruses have in common? A) They both only live for twenty-four hours. B) They both are the same size. C) They both can cause serious infectious diseases. D) They both are good and help our immune system. Show Answer Correct Answer: C) They both can cause serious infectious diseases. 39. The temperature at which every fuel burns is ..... A) The flush point. B) The flash point. C) The fire point. D) All of the above. Show Answer Correct Answer: B) The flash point. 40. Which microorganism is used in yeilding alcohol A) Yeast. B) Penicillin. C) Ameoba. D) None of the above. Show Answer Correct Answer: A) Yeast. 41. What do you think microbe means? A) It is something that we found it in the ocean. B) It is an insect. C) A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or in a colony of cells. D) It is a thing that enters the human body or an animal. Show Answer Correct Answer: C) A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or in a colony of cells. 42. Which gas is produced by yeast in the dough which makes bakery items fluffy? A) Carbon monoxide. B) Oxygen. C) Nitrogen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 43. What is an antibiotic? A) A disease for which there is no known cure. B) A rapid spread of a disease around the world. C) A type of bacteria living in human cells. D) A medicine that attacks harmful microbes. Show Answer Correct Answer: D) A medicine that attacks harmful microbes. 44. Antibiotics are effective against A) Bacteria. B) Algae. C) Viruses. D) All of the above. Show Answer Correct Answer: A) Bacteria. 45. ..... is released in the form of heat and light. A) Light. B) Energy. C) Carbon. D) Hydrogen. Show Answer Correct Answer: B) Energy. 46. Examples of fuel are A) Wood. B) Coal. C) Cooking Gas. D) All these. Show Answer Correct Answer: D) All these. 47. The process of conversion of sugar into alcohol is known as ..... A) Fermentation. B) Pasteurization. C) Nitrification. D) Nitrogen Fixation. Show Answer Correct Answer: A) Fermentation. 48. Which of the following reproduces only inside a host cell? A) Amoeba. B) Bacteria. C) Virus. D) Fungus. Show Answer Correct Answer: C) Virus. 49. In which year was Fermentation discovered A) 1859. B) 1752. C) 1857. D) None of the above. Show Answer Correct Answer: C) 1857. 50. Which of the following disease causing pathogens is / are carried by mosquitoes?1) Dengue fever 2) Malaria 3) Cholera 4) Both (1) and (2) A) 1. B) 4. C) 2. D) 3. Show Answer Correct Answer: B) 4. 51. Some plants have nitrogen-fixing bacteria in their root nodules. What are these bacteria called? A) Nitrosomonas. B) Blue green algae. C) Azotobacter. D) Rhizobium. Show Answer Correct Answer: D) Rhizobium. ← PreviousRelated QuizzesEnglish QuizzesClass 7 QuizzesClass 7 English Chapter 10 Fire Friend And Foe Quiz 1Class 7 English Chapter 10 Fire Friend And Foe Quiz 2Class 7 English Chapter 10 Fire Friend And Foe Quiz 3Class 7 English Chapter 10 Fire Friend And Foe Quiz 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books