This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Air Around Us > Class 6 Science Chapter 15 Air Around Us – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Air is mostly made up of what two gases? A) Oxygen and nitrogen. B) Oxygen and hydrogen. C) Hydrogen and helium. D) Nitrogen and hydrogen. Show Answer Correct Answer: A) Oxygen and nitrogen. 2. The layer of the atmosphere containing the ozone layer is A) Stratosphere. B) Thermosphere. C) Mesosphere. D) Troposphere. Show Answer Correct Answer: A) Stratosphere. 3. What air is filled in the tires of Airplanes?? A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: C) Nitrogen. 4. Where is air found? A) Inside You. B) Everywhere. C) Nowhere. D) In a balloon. Show Answer Correct Answer: B) Everywhere. 5. Which of these makes up about 21 percent of the atmosphere? A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) Argon. Show Answer Correct Answer: A) Oxygen. 6. What is the most abundant gas in Earth's atmosphere? A) Carbon dioxide. B) Argon. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 7. The air over industrial cities usually has a higher amount of ..... A) Argon. B) Carbon dioxde. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon dioxde. 8. Why do mountaineers carry oxygen cylinders with them at high altitude A) To get helium at high altitude. B) To get nitrogen at high altitude. C) To get oxygen at high altitude. D) To get water vapour at high altitude. Show Answer Correct Answer: C) To get oxygen at high altitude. 9. The envelope of air that surrounds the earth is called ..... A) Atmosphere. B) Hydrosphere. C) Lithosphere. D) None of the above. Show Answer Correct Answer: A) Atmosphere. 10. Is carbon dioxide important for only animals? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 11. What is a water vapour?page86 Rupa.A A) Water vapour is a type of fish. B) Water vapour is a form of electricity. C) Water vapour is the gaseous state of water. D) Water vapour is a solid state of water. Show Answer Correct Answer: C) Water vapour is the gaseous state of water. 12. Air is made up mostly of A) Carbon. B) Nitrogen. C) Oxygen. D) Hydrogen. Show Answer Correct Answer: B) Nitrogen. 13. Mountaineers carry ..... in cylinder A) Carbon dioxide. B) Air. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 14. What is the percentage of oxygen in air? A) 21%. B) 99%. C) 1%. D) 78%. Show Answer Correct Answer: A) 21%. 15. Air helps in the movements of sailing yachts, gliders, parachutes and aeroplanes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. The presence of water vapour in air is important for A) Ozone layer. B) Water cycle. C) Combustion. D) None. Show Answer Correct Answer: B) Water cycle. 17. Oxygen constitutes 21% of the air A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Clouds are made of water vapor (gas). A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 19. The Layer of air around the earth is known as A) Atmosphere. B) Oxygen. C) Nitrogen. D) Water vapor. Show Answer Correct Answer: A) Atmosphere. 20. Windmills cannot be used to draw water from wells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. Which of the gas is a major source of air pollution? A) Water vapour. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon dioxide. 22. Our earth is surrounded by ..... A) AIR. B) BIOSPHERE. C) All the above. D) None of the above. Show Answer Correct Answer: A) AIR. 23. Which of the following genrates electricity through air A) Water mill. B) Thread mill. C) Air mill. D) Wind mill. Show Answer Correct Answer: D) Wind mill. 24. Have you never sceen Air? Page84Laxman.Y A) Yes, I have seen Air. B) Yes, I have seen Fire. C) No, I have never seen Air. D) Yes, I have seen Water. Show Answer Correct Answer: A) Yes, I have seen Air. 25. Which layer protects us from the ultraviolet rays of the sun? A) Nitrogen Layer. B) Oxygen Layer. C) Methane Layer. D) None of the above. Show Answer Correct Answer: D) None of the above. 26. Blowing air is called??? A) Wind. B) Breeze. C) Storm. D) None of the above. Show Answer Correct Answer: A) Wind. 27. We often feel suffocation when a gas is present in excess in our room. This gas is A) Oxygen. B) Smoke. C) Nitrogen. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 28. What Type of Gas do we Breathe in? A) Nitrogen. B) Oxygen. C) We Don't Breathe in Air. D) Argon. Show Answer Correct Answer: B) Oxygen. 29. Burning fossil fuels cause ..... that cause pollution. A) Emissions. B) Headaches. C) Natural pollution. D) Temperature decrease. Show Answer Correct Answer: A) Emissions. 30. 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. 31. 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. 32. Arrange the jumbled words YNOGXE ..... A) Nitrogen. B) Oxygen. C) Carbon. D) All of these. Show Answer Correct Answer: B) Oxygen. 33. We cannot see air. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 34. Plants use ..... to make their own food during photosynthesis. A) Water. B) CO2. C) Water, energy from Sun, CO2. D) Energy from the Sun. Show Answer Correct Answer: C) Water, energy from Sun, CO2. 35. 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. 36. Symbol of oxygen A) %. B) &. C) @. D) 0. E) +. Show Answer Correct Answer: D) 0. 37. When air is passed through lime water it turns milky. This is due to A) Carbon-di-oxide. B) Oxygen. C) Nitrogen. D) Water vapour. Show Answer Correct Answer: A) Carbon-di-oxide. 38. . 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. 39. What controls and keeps fire in check? A) Carbon dioxide. B) Oxygen. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 40. Which is the second most abundant component of air? A) Water vapour. B) Nitrogen. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 41. What do we exhale? A) Oxygen. B) Nitrogen. C) Carbon Dioxide. D) Methane. Show Answer Correct Answer: C) Carbon Dioxide. 42. 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. 43. 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. 44. When we heat water, we find bubbles coming from it. This shows that-: A) Water contains dissolved minerals. B) Water itself converts into bubbles. C) Air contains water. D) Water contains air. Show Answer Correct Answer: D) Water contains air. 45. Are there any parts of the human body that get oxygen directly from the air and not from the blood? A) Eyes. B) Ear. C) Lungs. D) Mouth. Show Answer Correct Answer: C) Lungs. 46. Why is it harder to breath at higher altitudes? A) The air is less dense. Less pressure means that the air is thin. B) The air is more dense. Heavy air is hard to breath. C) Less percentage of oxygen at higher levels. D) It is not harder to breath at higher altitudes,. Show Answer Correct Answer: A) The air is less dense. Less pressure means that the air is thin. 47. . Air contains ..... particles. A) DUST. B) MIXTURE. C) All the above. D) None of the above. Show Answer Correct Answer: A) DUST. 48. 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. 49. How much percentage of Oxygen is present in the air? A) 22%. B) 20%. C) 31%. D) 21%. Show Answer Correct Answer: D) 21%. 50. By which material we can see air? A) Dust particles. B) Water. C) Bubbles. D) Itself. Show Answer Correct Answer: A) Dust particles. 51. Which is not a property of air? A) It Occupies Space. B) It is a Compound. C) It is Transparent. D) None of the above. Show Answer Correct Answer: B) It is a Compound. 52. Mountaineers carry ..... cylinders with them, while climbing mountains. A) Nitrogen. B) Carbon dioxide. C) Oxygen. D) None of the above. Show Answer Correct Answer: C) Oxygen. 53. Which one of the following has the major part in air A) Oxygen. B) Carbon Dioxide. C) Helium. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 54. Which gas do plants use to respire? A) Carbon-Dioxide. B) Oxygen. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: B) Oxygen. 55. Mountaineer carry oxygen cylinder with them because A) Air becomes heavy while going up. B) Air becomes less while coming back. C) Air becomes less while going up. D) None of the above. Show Answer Correct Answer: C) Air becomes less while going up. 56. We cannot see air but we can ..... it. A) Feel. B) Taste. C) Smell. D) Touch. Show Answer Correct Answer: A) Feel. 57. Properties of oxygen gas is A) Colourless. B) Tasteless. C) Odourless. D) All of these. Show Answer Correct Answer: D) All of these. 58. State true or false Nitrogen supports burning of a candle A) True. B) Speak. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 59. Smoke is produced mainly by burning A) Wood. B) Coal. C) Kerosene. D) All of these. Show Answer Correct Answer: D) All of these. 60. Which gas is responsible for the greenhouse effect? A) Oxygen. B) Carbon dioxide. C) Argon. D) Nitrogen. Show Answer Correct Answer: B) Carbon dioxide. ← PreviousNext →Related QuizzesScience QuizzesClass 6 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 6Class 6 Science Chapter 15 Air Around Us Quiz 7Class 6 Science Chapter 15 Air Around Us Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books