This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Air Around Us > Class 6 Science Chapter 15 Air Around Us – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What causes acid rain A) When Sulphur Dioxide mixes with the water vapor present in the clouds. B) When Carbon Dioxide mixes with the water vapor present in the clouds. C) When Smoke mixes with the water vapor present in the clouds. D) None of the above. Show Answer Correct Answer: A) When Sulphur Dioxide mixes with the water vapor present in the clouds. 2. Choose the correct option. Which of the following is present in air? A) Water vapour, nitrogen, carbon monoxide. B) Dust, oxygen, nitrogen, pollens. C) Carbon dioxide, argon, oxygen, hydrogen. D) All of these. Show Answer Correct Answer: D) All of these. 3. The ..... make windmill rotate A) Wind. B) Power. C) Electricity. D) None of the above. Show Answer Correct Answer: A) Wind. 4. Since the late ..... s, air power has also been used to generate electricity. A) 2000. B) 1700. C) 1800. D) 1900. Show Answer Correct Answer: D) 1900. 5. Which of these is a property of air? A) Air occupies up space. B) Air has a fixed shape. C) Air cannot be compressed. D) Air has a fixed volume. Show Answer Correct Answer: A) Air occupies up space. 6. Properties of air A) Air is visible. B) Air occupies space. C) Air has definite shape. D) Air has weight. E) Both (b) and (d). Show Answer Correct Answer: E) Both (b) and (d). 7. The hot air rises up and the ..... air takes its place A) Atmosphere. B) Cool. C) Carbon. D) None. Show Answer Correct Answer: B) Cool. 8. Wind is(a) air around us(b) rising hot air(c) air in motion(d) none of these A) A. B) D. C) C. D) B. Show Answer Correct Answer: C) C. 9. Which gas(es) present in air does not support burning? A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) Nirogen and Carbon Dioxide. Show Answer Correct Answer: D) Nirogen and Carbon Dioxide. 10. As I walk up Mt Everest, the density of air ..... A) Decreases. B) Increases. C) All the above. D) None of the above. Show Answer Correct Answer: A) Decreases. 11. When does wind blow at a very high speed? A) Always. B) During summer times. C) During a storm. D) All of the above. Show Answer Correct Answer: C) During a storm. 12. Air has no weight. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. Air does not occupy any space. TRUE or FALSE? A) FALSE. B) TRUE. C) All the above. D) None of the above. Show Answer Correct Answer: A) FALSE. 14. Which layer protects us from the harmful UV rays? A) Atmosphere. B) Ozone Layer. C) Stratosphere. D) Troposphere. Show Answer Correct Answer: B) Ozone Layer. 15. As we move higher in the atmosphere, the air gets ..... A) Increases. B) More. C) Rarer. D) None of the above. Show Answer Correct Answer: C) Rarer. 16. Nitrogen is ..... % A) 63%. B) 3333%. C) 41%. D) 78%. E) 88%. Show Answer Correct Answer: D) 78%. 17. The ..... makes the windmillrotate. A) Electricity. B) Wind. C) All the above. D) None of the above. Show Answer Correct Answer: B) Wind. 18. How much percentage of the air do oxygen and nitrogen take combined? A) 1%. B) 98%. C) 100%. D) 99%. Show Answer Correct Answer: D) 99%. 19. Which gas is released during respiration? A) Carbon Dioxide. B) Hydrogen. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: A) Carbon Dioxide. 20. Component of air which support burning is called A) Oxygen. B) Water Vapour. C) Nitrogen. D) None of the above. Show Answer Correct Answer: A) Oxygen. 21. What is moving air called? A) Storm. B) Wind. C) Oxygen. D) Breeze. Show Answer Correct Answer: B) Wind. 22. ..... gas is necessary for burning A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: A) Oxygen. 23. The humidity of a place A) Varies from time to time. B) Is always more than 50 %. C) Lies between 10-20%. D) Is always less than 80%. Show Answer Correct Answer: A) Varies from time to time. 24. What do we inhale? A) Nothing. B) Oxygen. C) Carbon Dioxide. D) Everything. Show Answer Correct Answer: B) Oxygen. 25. People wear masks to protect their face from? A) Smoke. B) Dust. C) Germs. D) All of the above. Show Answer Correct Answer: D) All of the above. 26. Makes up a small component of the air around us A) Oxygen. B) Carbondioxide. C) Water Vapour. D) None of the above. Show Answer Correct Answer: B) Carbondioxide. 27. During photosynthesis, plants take in A) Carbon dioxide. B) Carbon monoxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: A) Carbon dioxide. 28. ..... is used to generate electricity. A) Soilmills. B) Watermills. C) Carbonmills. D) Windmills. Show Answer Correct Answer: D) Windmills. 29. Why do you think mountaineer carry oxygen cylinders with them, while climbing high mountains? A) There is much air. B) They likes to carry that. C) There is less oxygen. D) All. Show Answer Correct Answer: C) There is less oxygen. 30. Formula of water A) H2O. B) CO2. C) Car. D) None of the Above. Show Answer Correct Answer: A) H2O. 31. The ozone layer protects us from the harmful rays of the sun A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. Amount of nitrogen present in air is A) 21%. B) 78%. C) 32%. D) 52%. Show Answer Correct Answer: B) 78%. 33. Plants, animals and human beings use oxygen for A) Sleeping. B) Eating. C) Respiration. D) Living. Show Answer Correct Answer: C) Respiration. 34. Which of the following has most water vapour in the air A) Delhi. B) Mumbai. C) Rajasthan. D) All have an equal amount. Show Answer Correct Answer: B) Mumbai. 35. High up in the earth's atmosphere, in the region between about ..... km and about ..... km, is present a layer of ozone gas. A) 10, 50. B) 80, 50. C) 25, 78. D) 40, 90. Show Answer Correct Answer: A) 10, 50. 36. ..... supports burning and is necessary for living organisms. A) Krypton. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 37. Windmills are used to A) Draw water from tube wells. B) Run flour mills. C) Generate electricity. D) All the above. Show Answer Correct Answer: D) All the above. 38. Which gas is released during photosynthesis? A) Carbon Dioxide. B) Nitrogen. C) Oxygen. D) None of the above. Show Answer Correct Answer: C) Oxygen. 39. A mixture of smoke and fog in the Air. A) Wheezing. B) Smog. C) Storm. D) Clouds. Show Answer Correct Answer: B) Smog. 40. Air takes up ..... A) Height. B) Water. C) Space. D) Weight. Show Answer Correct Answer: C) Space. 41. The composition of nitrogen gas in the atmosphere is A) 21%. B) 0.01%. C) 78%. D) 1%. Show Answer Correct Answer: C) 78%. 42. Which of the following statement is true about air? A) Air becomes thicker as you go higher up. B) There are more air particles higher up. C) The lowest air pressure is at the Earth's surface. D) The highest air pressure is at the Earth's surface. Show Answer Correct Answer: D) The highest air pressure is at the Earth's surface. 43. Carbon dioxide has ..... taste? A) Bad. B) Sweet. C) Sour. D) Good. Show Answer Correct Answer: C) Sour. 44. Mountaineers carry ..... cylinder with them when climbing mountain A) Nitrogen. B) Oxygen. C) Hydrogen. D) CO2. Show Answer Correct Answer: B) Oxygen. 45. What gas do plants use during photosynthesis? A) Carbon dioxide. B) Oxygen. C) Argon. D) Nitrogen. Show Answer Correct Answer: A) Carbon dioxide. 46. What is a water vapour A) It is present in the air when it come with contact with cool surface rain comes. B) Sweat. C) Condensation. D) No, idea. Show Answer Correct Answer: A) It is present in the air when it come with contact with cool surface rain comes. 47. Which gas of the following to plants need for photosynthesis? A) Oxygen. B) Ozone. C) Carbon Dioxide. D) Xenon. Show Answer Correct Answer: C) Carbon Dioxide. 48. The blanket 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. 49. Why is it not favorable to burn leaves? A) It makes the leaves giant. B) It produces harmful gases. C) It doesn't do anything. D) All of the above. Show Answer Correct Answer: B) It produces harmful gases. 50. Air around us exerts ..... A) Pressure. B) Low. C) Heating. D) Wind. Show Answer Correct Answer: A) Pressure. 51. The process by which energy is produced from the food taken A) Respiration. B) Photosynthesis. C) Digestion. D) None of the above. Show Answer Correct Answer: A) Respiration. 52. How many types of pollution are there? A) 6. B) 4. C) 5. D) 2. Show Answer Correct Answer: C) 5. 53. Which gas contains dust particles? A) Smoke. B) Dust. C) Both a&b. D) Only b. Show Answer Correct Answer: A) Smoke. 54. As altitude increases, air pressure ..... A) Deflects due to the Coriolis Effect. B) Stays the same. C) Increases. D) Decreases. Show Answer Correct Answer: D) Decreases. 55. What are the properties of air? A) It occupies space. B) It is present everywhere around us. C) It has no colour and is transparent. D) All of the above. Show Answer Correct Answer: D) All of the above. 56. The solubility ..... with increase in temperature. A) Doesn't change. B) Decreases. C) Increases. D) None of the above. Show Answer Correct Answer: C) Increases. 57. What is the primary component of the air we breathe? A) Oxygen. B) Argon. C) Nitrogen. D) Carbon Dioxide. Show Answer Correct Answer: C) Nitrogen. 58. Air is a compound and not an element A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 59. Air cannot be ..... but can be ..... A) Heard, seen. B) Seen, felt. C) Seen, heard. D) Felt, seen. Show Answer Correct Answer: B) Seen, felt. 60. What is Humidity A) The amount of water vapour present in air. B) The amount of oxygen present in air. C) More heat in the atmosphere. D) None of the above. Show Answer Correct Answer: A) The amount of water vapour present in air. ← 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 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books