This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 15 Air Around Us – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Where you will find the ozone layer. A) Stratosphere. B) Thermosphere. C) Exosphere. D) Mesosphere. Show Answer Correct Answer: A) Stratosphere. 2. Nitrogen supports burning. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. True or FalseA firki rotates only in an open area or in a closed room with the ceiling fan switched on. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Air is present everywhere but not in soil. TRUE or FALSE? A) FALSE. B) TRUE. C) All the above. D) None of the above. Show Answer Correct Answer: A) FALSE. 5. The atmosphere acts as a ..... A) Air. B) Blanket. C) Water. D) Shield. Show Answer Correct Answer: B) Blanket. 6. Choose odd one outBreeze, Dust, Gale, Storm A) Gale. B) Dust. C) Breeze. D) None of the above. Show Answer Correct Answer: B) Dust. 7. Which gas makes up 21% of the atmosphere? A) Ozone. B) Oxygen. C) Nitrogen. D) Water vapor. Show Answer Correct Answer: B) Oxygen. 8. The layers of the atmosphere that get colder as altitude increases are A) Thermosphere and troposphere. B) Meosphere and troposphere. C) Stratosphere and thermosphere. D) Thermosphere and mesosphere. Show Answer Correct Answer: B) Meosphere and troposphere. 9. Formula of carbon dioxide A) H. B) Car. C) H2O. D) CO2. Show Answer Correct Answer: C) H2O. 10. The layer of the atmosphere where meteors burn up A) Mesosphere. B) Thermosphere. C) Troposphere. D) Stratosphere. Show Answer Correct Answer: A) Mesosphere. 11. Other than nitrogen which gas is major in the air? A) Neon. B) Argon. C) Oxygen. D) Carobn-Dioxide. Show Answer Correct Answer: C) Oxygen. 12. What are the uses of Carbon-Dioxide A) Used by plants for photosynthesis. B) Traps the heat from the sun to maintain the Earth's temperature. C) All of the above. D) None of the above. Show Answer Correct Answer: C) All of the above. 13. Windmills do not generate electricity, when wind turns its fan rapidly A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 14. How is the oxygen in the Atmosphere Replaced? Page94 Ramlaxmi.G A) Through volcanic eruptions releasing oxygen. B) Through the process of photosynthesis by plants and phytoplankton. C) By the process of combustion. D) Through the decomposition of organic matter. Show Answer Correct Answer: B) Through the process of photosynthesis by plants and phytoplankton. 15. Which gas is necessary for burning? A) Nitrogen. B) Oxygen. C) CO2. D) None of the above. Show Answer Correct Answer: B) Oxygen. 16. When we cover the burning candle by putting an inverted glass over it. What would happen? A) Candle will keep on burning. B) Candle will blown off. C) All the above. D) None of the above. Show Answer Correct Answer: B) Candle will blown off. 17. Makes three fourth part of total air. A) Nitrogen. B) Oxygen. C) Argon. D) Water Vapour. Show Answer Correct Answer: A) Nitrogen. 18. Which gas is used for human survival in the earth A) Oxygen. B) Water vapor. C) Breeze. D) Dust particles. Show Answer Correct Answer: A) Oxygen. 19. Water is present in the air in the form of ..... A) Water vapor. B) Water cycle. C) Carbon-dioxide. D) Oxygen. Show Answer Correct Answer: A) Water vapor. 20. The gas which is called green house gas is: A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) Argon. Show Answer Correct Answer: C) Carbon dioxide. 21. We cannot ..... air, but we can ..... it. A) See, feel. B) Hear, see. C) Feel, hear. D) Taste, wash. Show Answer Correct Answer: A) See, feel. 22. The layer which protects us from the harmful ultravoilet rays of the sun is? A) Ozone layer. B) Atmosphere. C) Protection layer. D) None of the above. Show Answer Correct Answer: A) Ozone layer. 23. We should breathe through our ..... A) Mouth. B) Nostrils. C) Ears. D) Eyes. Show Answer Correct Answer: B) Nostrils. 24. Take an empty glass bottle. Turn it upside down. Now, dip the open mouth of the bottle into a bucket filled with water. now, tilt the bottle slightly. you can see air bubbles in the water. what can we infer from this? A) Air is everywhere. It is present even in the empty bottle. B) Air does not have any colour and it is transparent. C) Air has mass. D) None of the above. Show Answer Correct Answer: A) Air is everywhere. It is present even in the empty bottle. 25. Which components of air are harmful to living organisms? A) Nitrogen and oxygen. B) Dust and smoke. C) Oxygen and carbon dioxide. D) Smoke and water vapour. Show Answer Correct Answer: B) Dust and smoke. ← 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 3Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books