This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 15 Air Around Us – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which gas to plants breathe? A) Carbon-Dioxide. B) Hydrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: C) Oxygen. 2. Why do plants need air? A) Plants need air to breathe. B) Plants need air to sleep. C) Plants need air to smell. D) None of the above. Show Answer Correct Answer: A) Plants need air to breathe. 3. Which of the following is NOT present in air?(a) Oxygen(b) Nitrogen(c) Helium(d) Iron A) A. B) B. C) C. D) D. Show Answer Correct Answer: D) D. 4. ..... Gas occupies the largest part of composition of a A) Oxygen. B) Nitrogen. C) Hydrogen. D) Carbon dioxide. Show Answer Correct Answer: B) Nitrogen. 5. We can ..... the air. A) Feel. B) Touch. C) All the above. D) None of the above. Show Answer Correct Answer: A) Feel. 6. The total percentage of nitrogen and oxygen in air is A) 99. B) 10. C) 100. D) 78. Show Answer Correct Answer: A) 99. 7. In a closed room, if there is some material that is burning, you may have felt suffocation. This is due to the presence of A) Oxygen. B) Carbon dioxide. C) Nitrogen. D) Water vapour. Show Answer Correct Answer: B) Carbon dioxide. 8. Which of the following gas we use in breathing? A) Carbon dioxide. B) Nitrogen. C) Oxygen. D) None of these. Show Answer Correct Answer: C) Oxygen. 9. Which of the following gas is used for breathing? A) Carbon dioxide. B) Nitrogen. C) Oxygen. D) None of these. Show Answer Correct Answer: C) Oxygen. 10. Air is used by all the organisms for A) Digestion. B) Respiration. C) Excretion. D) None of the above. Show Answer Correct Answer: B) Respiration. 11. What occupies space? A) Water. B) Air. C) Ball. D) Both a&c. Show Answer Correct Answer: B) Air. 12. Plants give out this gas during photosynthesis A) Nitrogen. B) Oxygen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: B) Oxygen. 13. Which of the following is NOT true about air? A) Air can be compressed (pushed into a smaller space). B) Air has mass. C) Air takes up space. D) All of the above are true. Show Answer Correct Answer: D) All of the above are true. 14. Is Methane more powerful than Carbon Dioxide? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. The presence of water vapor is Air is important for(a) Water Cycle(b) Ozone layer(c) Combustion(d) None of the above A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 16. Which of the following is false about carbon dioxide A) Is a greenhouse gas. B) Is not used by plants. C) Is used by plants. D) None of the above. Show Answer Correct Answer: B) Is not used by plants. 17. Which of the following gas helps in burning?, (a) Nitrogen(b) Oxygen(c) Carbon dioxide(d) Carbon monoxide A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 18. What is important gas to make proteins. A) Nitrogen. B) Oxygen. C) Smoke. D) Dust particles. Show Answer Correct Answer: A) Nitrogen. 19. Major part of the air is constituted by A) Nitrogen. B) Neon. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: A) Nitrogen. 20. Air ..... water. A) Up. B) Down. C) Both a&b. D) Hold. Show Answer Correct Answer: D) Hold. 21. WHICH OF THE FOLLOWING IS NOT THE PROPERTY OF AIR? A) AIR OCCUPIES SPACE. B) AIR IS TRANSPARENT. C) AIR IS A SOLUTION. D) AIR IS COMPOUND. Show Answer Correct Answer: D) AIR IS COMPOUND. 22. What is a air pollution? A) Air pollution is polluting the land. B) Air pollution is pollution in air. C) Clean air. D) Odourful water. Show Answer Correct Answer: B) Air pollution is pollution in air. 23. Does air have a weight? A) Yes, it does. B) No, it doesn't. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes, it does. 24. How to prevent air pollution? A) To plant trees. B) To use bicycles or public transport instead of using private vehicles. C) All of the mentioned. D) To share the seat in car or bike to other person or the friend who is coming or going to the same destination or place where we are going to go to. Show Answer Correct Answer: C) All of the mentioned. 25. Which of the following statements is true regarding the earths atmosphere? A) It gets denser with increase in altitude. B) It gets thinner with increase in altitude. C) It remains the same. D) It contains no solid particles. Show Answer Correct Answer: B) It gets thinner with increase in altitude. ← PreviousNext →Related QuizzesClass 6 Science Chapter 15 Air Around Us Quiz 1Class 6 Science Chapter 15 Air Around Us Quiz 2Class 6 Science Chapter 15 Air Around Us Quiz 4Class 6 Science Chapter 15 Air Around Us Quiz 5Class 6 Science Chapter 15 Air Around Us Quiz 6Class 6 Science Chapter 15 Air Around Us Quiz 7Class 6 Science Chapter 15 Air Around Us Quiz 8Class 6 Science Chapter 15 Air Around Us Quiz 9Class 6 Science Chapter 15 Air Around Us Quiz 10Class 6 Science Chapter 15 Air Around Us Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books