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 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 English Chapter 10 Fire Friend And Foe Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The process of conversion of sugar into alcohol in the absence of oxygen is called A) Fermentation. B) Decomposition. C) Pasteurization. D) Vaccination. Show Answer Correct Answer: A) Fermentation. 2. Microbes are effective due to their A) Various shapes. B) Ability to reproduce. C) Tolerance. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 3. Early man was frientend of A) Lighting and valcano. B) The damage caused by them. C) Fire. D) None. Show Answer Correct Answer: C) Fire. 4. Can microorganisms grow in low-temperature(cold) A) Yes. B) No. C) It's their wish. D) None of the above. Show Answer Correct Answer: B) No. 5. Fire is considered to be ..... of mankind. A) Dangerous enemy. B) Threat. C) Greatest discovery. D) Friend. Show Answer Correct Answer: C) Greatest discovery. 6. The process of conversion of sugar into alcohol is called 1) Infection 2) Moulding 3) Nitrogen fixation 4) Fermentation A) 2. B) 1. C) 3. D) 4. Show Answer Correct Answer: D) 4. 7. In the above context, fire can be put out A) With water. B) By the human chain. C) Carbohydro dioxide extingusher. D) None of the above. Show Answer Correct Answer: C) Carbohydro dioxide extingusher. 8. Which one of the following is not produced by the process of fermentation? A) Milk. B) Wine. C) Yoghurt. D) Cheese. Show Answer Correct Answer: A) Milk. 9. Water is the only solution to extinguish fire A) True. B) False. C) Partially correct. D) None of the above. Show Answer Correct Answer: B) False. 10. Jams, jellies and squashes are preserved by adding salt. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. Question 3:Antibiotics A) Convert sugar into alcohol. B) Kill disease-causing microorganisms. C) Slow down the growth of disease-causing microorganisms. D) Speed up the growth of micoorganisms. Show Answer Correct Answer: B) Kill disease-causing microorganisms. 12. Partial sterilization of a product such as milk at a high temperature is known as: A) Filtration. B) Pasteurization. C) Refrigeration. D) Pickling. Show Answer Correct Answer: B) Pasteurization. 13. What Do You Mean By Communicable Diseases? A) It can spread from infected person to others. B) It can spread by street food. C) It can be spread by coughing and sneezing. D) All the above. Show Answer Correct Answer: D) All the above. 14. The fire brigade is: A) An old concept. B) A band of fire-fighters. C) A human chain. D) Both (a) and (b). Show Answer Correct Answer: B) A band of fire-fighters. 15. Early man thought that fire A) Was indeed dangerous. B) Awaz an accidental phenomenon. C) Was gift of God. D) Could help him cook. Show Answer Correct Answer: A) Was indeed dangerous. 16. Plant disease citrus canker is caused by1) Virus 2) Fungi 3) Bacteria 4) None of these A) 2. B) 1. C) 3. D) 4. Show Answer Correct Answer: C) 3. 17. What are the major groups of microorganisms? A) There is no definite answer. B) Bacteria, fungi, protozoa, virus. C) Bacteria, fungi, protozoa, algae. D) Bacteria, fungi, protozoa, virus, algae. Show Answer Correct Answer: C) Bacteria, fungi, protozoa, algae. 18. A paper can burn only A) When we heat it before it catches fire. B) If we toss it from one end to the another. C) When we keep blowing air over it. D) If we get a smoulder paper. Show Answer Correct Answer: A) When we heat it before it catches fire. 19. Carrier of malarial parasite is A) Male House fly. B) Female anopheles mosquito. C) Frog. D) All of these. Show Answer Correct Answer: B) Female anopheles mosquito. 20. Paheli Is Writing Some Sentences About "Algae" . In Which Of Sentences, She Is Writing As Incorrect? A) Spirogyra is single-celled algae. B) Chlamydomonas and diatoms are multi-celled algae. C) Blue-green algae can not fix nitrogen gas of atmosphere. D) All the above. Show Answer Correct Answer: D) All the above. 21. Are microorganisms useful and harmful both A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 22. The following is preservative A) Water. B) Juice. C) Oil. D) Milk. Show Answer Correct Answer: C) Oil. 23. Bacteria are made up of how many cells? A) Trillions!. B) 4. C) 1. D) None of these. Show Answer Correct Answer: C) 1. 24. Question 1:Penicillin was discovered by A) Edward Jenner. B) Louis Pasteur. C) Alexander Fleming. D) Robert Brown. Show Answer Correct Answer: C) Alexander Fleming. 25. What is a vaccine? A) A substance containing antibiotics. B) A vaccine is a substance that is used for the production of antidotes in the body. C) Water disguised as chemicals. D) Unnecessary medicines that give us pain. Show Answer Correct Answer: B) A vaccine is a substance that is used for the production of antidotes in the body. 26. Lowering the temperature below the flashpoint: A) Causes fire. B) Extinguishes the fire. C) Lowers the density. D) None of the above. Show Answer Correct Answer: B) Extinguishes the fire. 27. Name the chemical preservative used in jams and squashes A) Carbon Benzoate. B) Salt. C) Sodium metabisulphite. D) Oil and vinegar. Show Answer Correct Answer: C) Sodium metabisulphite. 28. Which of the following diseases is caused by a fungus? A) Dengue. B) Cholera. C) Ringworm. D) Common cold. Show Answer Correct Answer: C) Ringworm. 29. Bacteria is known as ..... in an ecosystem when feeding on dead organisms. A) Pathogens. B) Herbivores. C) Decomposersers. D) Infections. Show Answer Correct Answer: C) Decomposersers. 30. ..... is used for the production of alcohol and wine. A) Algae. B) Ant. C) Yeast. D) Mosquito. Show Answer Correct Answer: C) Yeast. 31. Which of them is not a microbe A) Penicillin. B) Bacteria. C) Protrzoa. D) None of the above. Show Answer Correct Answer: A) Penicillin. 32. The gas released during the prepration of bread is A) Oxygen. B) Sulphur dioxide. C) Nitrogen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 33. Some bacteria is known as ..... and cause disease. A) Pathogens. B) Ebola. C) Flagella. D) Influenza. Show Answer Correct Answer: A) Pathogens. 34. Edward Jenner discovered vaccine for A) Chicken pox. B) Small pox. C) Malaria. D) Tuberculosis. Show Answer Correct Answer: B) Small pox. 35. The bread dough rises because of1) Kneading 2) Heat 3) Grinding 4) Growth of yeast cells A) 1. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 36. Fire brigade is: A) An old concept. B) A band of fire fighters. C) A human chain. D) Both 1& 2. Show Answer Correct Answer: B) A band of fire fighters. 37. Malaria is caused by which type of microbe? A) Bacteria. B) Algae. C) Fungi. D) Protozoa. Show Answer Correct Answer: D) Protozoa. 38. A chemical reaction takes place when A) Carbon dioxide combines with hydrogen. B) Oxygen combines with carbon. C) Oxygen combines with hydrogen. D) Oxygen combines with carbon and Hydrogen. Show Answer Correct Answer: D) Oxygen combines with carbon and Hydrogen. 39. The following is an antibiotic- A) Fungus. B) Yeast. C) Streptomycin. D) Alcohol. Show Answer Correct Answer: C) Streptomycin. 40. The algae that fixes atmospheric nitrogen from air and thus enriches the soil with nitrogenous compound for plants is A) Blue green algae. B) Chlamydomonas. C) Chlorella. D) Diatoms. Show Answer Correct Answer: A) Blue green algae. 41. The different colors in algae are caused by ..... A) Phytoplankton. B) Protozoans. C) Pigments. D) Cilia. Show Answer Correct Answer: C) Pigments. 42. Living organism that we cannot normally see with our naked eyes are called A) Microorganisms. B) Macro organisms. C) Animals. D) None. Show Answer Correct Answer: A) Microorganisms. 43. When you blow on smouldering paper, it often bursts into ..... A) Heat. B) Flame. C) Gas. D) None of these. Show Answer Correct Answer: B) Flame. 44. Lowering the temperature below the flash point: A) Causes fire. B) Lowers the density. C) Extinguishes the fire. D) None of the above. Show Answer Correct Answer: C) Extinguishes the fire. 45. Carrier of malaria causing protozoan is 1) Butterfly 2) Housefly 3) Female Anopheles Mosquito 4) Cockroach A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: A) 3. 46. Fungi is beneficial to us beacause of the following reason A) They can clean up pollution. B) They are a source of antibiotics. C) They are a source of oxygen. D) They help to clean run off from waste. Show Answer Correct Answer: B) They are a source of antibiotics. 47. Which of the following is not used as food preservatives? A) Salt. B) Vinegar. C) Methane. D) Sugar. Show Answer Correct Answer: C) Methane. 48. When was fire discovered? A) Non of the following. B) Stone age. C) In 2001. D) Modern was. Show Answer Correct Answer: B) Stone age. 49. The two micro-organisms which live in symbiotic association in lichens are A) Fungus and protozoa. B) Bacteria and protozoa. C) Alga and bacteria. D) Alga and fungus. Show Answer Correct Answer: D) Alga and fungus. 50. Which of the following is not responsible for spoilage of food? A) Chemical. B) Bacteria. C) Algae. D) Fungi. Show Answer Correct Answer: C) Algae. 51. Cholera is caused by A) Protozoa. B) Bacteria. C) Virus. D) Fungi. Show Answer Correct Answer: B) Bacteria. 52. Are the following microbes harmful1 Lactobacillus2 Rhizobium A) No. B) Yes. C) All the above. D) None of the above. Show Answer Correct Answer: A) No. 53. The things required to make fire are ..... (choose all correct answers) A) Oxygen. B) Heat. C) Water. D) Fuel. Show Answer Correct Answer: A) Oxygen. 54. What type of fungi is used to help bread rise? A) Truffles. B) Yeast. C) Mold. D) Mushrooms. Show Answer Correct Answer: B) Yeast. 55. Which of the following diseases can be cured using antibiotics? A) Dengue. B) AIDS. C) Typhoid. D) Malaria. Show Answer Correct Answer: C) Typhoid. 56. A fungus that is usually located on your feet which causes skin disease.Ring WormAthletes FootE ColiProtozoa A) Protozoa. B) Ring Worm. C) And coli. D) Athletes Foot. Show Answer Correct Answer: D) Athletes Foot. 57. The most common carrier of communicable diseases is A) Housefly. B) Ant. C) Dragonfly. D) Spider. Show Answer Correct Answer: A) Housefly. 58. What is the causative microorganism of tuberculosis? A) Fungi. B) Virus. C) Bacteria. D) Protozoa. Show Answer Correct Answer: C) Bacteria. 59. Viruses can also be called ..... A) Pathogens. B) Parasites. C) Decomposersers. D) Flagella. Show Answer Correct Answer: B) Parasites. 60. Typhoid and tuberculosis are caused by A) Fungi. B) Algae. C) Protozoa. D) Bacteria. Show Answer Correct Answer: D) Bacteria. ← PreviousNext →Related 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 4Class 7 English Chapter 10 Fire Friend And Foe Quiz 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books