This quiz works best with JavaScript enabled. Home > Class 6 > Class 6 Science Chapter 15 Air Around Us – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. We often feel suffocation when a gas is present in excess in our room. This gas is A) Smoke. B) Oxygen. C) Carbon dioxide. D) Nitrogen. Show Answer Correct Answer: C) Carbon dioxide. 2. What Type of Gas do we Breathe in? A) Oxygen. B) Argon. C) We Don't Breathe in Air. D) Nitrogen. Show Answer Correct Answer: A) Oxygen. 3. Burning fossil fuels cause ..... that cause pollution. A) Temperature decrease. B) Headaches. C) Emissions. D) Natural pollution. Show Answer Correct Answer: C) Emissions. 4. The amount of water vapor in the air can differ from place to place. Which place would have more water vapor in the atmosphere? A) Desert. B) Rain forest. C) All the above. D) None of the above. Show Answer Correct Answer: B) Rain forest. 5. Dust particles are always present in air. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Arrange the jumbled words YNOGXE ..... A) Nitrogen. B) Oxygen. C) Carbon. D) All of these. Show Answer Correct Answer: B) Oxygen. 7. We cannot see air. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 8. Plants use ..... to make their own food during photosynthesis. A) Water. B) Energy from the Sun. C) CO2. D) Water, energy from Sun, CO2. Show Answer Correct Answer: D) Water, energy from Sun, CO2. 9. How does the atmosphere protect life on Earth? A) It blocks harmful rays from the sun. B) It maintains the right temperature on Earth. C) It provides oxygen to breathe. D) All of these protect life on Earth. Show Answer Correct Answer: D) All of these protect life on Earth. 10. Symbol of oxygen A) 0. B) +. C) %. D) &. E) @. Show Answer Correct Answer: A) 0. 11. When air is passed through lime water it turns milky. This is due to A) Water vapour. B) Carbon-di-oxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon-di-oxide. 12. . Removal of water from plant bodies in the form of vapours is called ..... A) Photosynthesis. B) Water cycle. C) Transpiration. D) None of the above. Show Answer Correct Answer: C) Transpiration. 13. What controls and keeps fire in check? A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) Hydrogen. Show Answer Correct Answer: B) Nitrogen. 14. Which is the second most abundant component of air? A) Oxygen. B) Nitrogen. C) Water vapour. D) Carbon dioxide. Show Answer Correct Answer: A) Oxygen. 15. What do we exhale? A) Nitrogen. B) Carbon Dioxide. C) Oxygen. D) Methane. Show Answer Correct Answer: B) Carbon Dioxide. 16. The main constituent of the air is. A) (a) nitrogen. B) (b) oxygen. C) (c) carbon dioxide. D) NONE. Show Answer Correct Answer: A) (a) nitrogen. 17. Take some water in a glass or metal container. Heat it slowly on a tripod Stand. Well before the water begins to boil, look carefully at the inner surface of the container. Do you see tiny bubbles on the Inside? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 18. When we heat water, we find bubbles coming from it. This shows that-: A) Water contains air. B) Air contains water. C) Water itself converts into bubbles. D) Water contains dissolved minerals. Show Answer Correct Answer: A) Water contains air. 19. Are there any parts of the human body that get oxygen directly from the air and not from the blood? A) Lungs. B) Eyes. C) Mouth. D) Ear. Show Answer Correct Answer: A) Lungs. 20. Why is it harder to breath at higher altitudes? A) The air is more dense. Heavy air is hard to breath. B) The air is less dense. Less pressure means that the air is thin. C) Less percentage of oxygen at higher levels. D) It is not harder to breath at higher altitudes,. Show Answer Correct Answer: B) The air is less dense. Less pressure means that the air is thin. 21. . Air contains ..... particles. A) DUST. B) MIXTURE. C) All the above. D) None of the above. Show Answer Correct Answer: A) DUST. 22. Fish derive oxygen from A) The soil below water. B) Dissolved air in water. C) Atmospheric air. D) None of these. Show Answer Correct Answer: B) Dissolved air in water. 23. How much percentage of Oxygen is present in the air? A) 22%. B) 20%. C) 31%. D) 21%. Show Answer Correct Answer: D) 21%. 24. Which Gas Do Plants Breathe? A) Oxygen. B) Carbon-Monoxide. C) Nitrogen. D) Carbon-Dioxide. Show Answer Correct Answer: D) Carbon-Dioxide. 25. By which material we can see air? A) Water. B) Itself. C) Dust particles. D) Bubbles. Show Answer Correct Answer: C) Dust particles. ← 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