This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Air Around Us > Class 6 Science Chapter 15 Air Around Us – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. The presence of water vapor is Air is important for(a) Water Cycle(b) Ozone layer(c) Combustion(d) None of the above A) B. B) C. C) D. D) A. Show Answer Correct Answer: D) A. 3. 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. 4. Which of the following gas helps in burning?, (a) Nitrogen(b) Oxygen(c) Carbon dioxide(d) Carbon monoxide A) C. B) A. C) D. D) B. Show Answer Correct Answer: D) B. 5. What is important gas to make proteins. A) Nitrogen. B) Smoke. C) Dust particles. D) Oxygen. Show Answer Correct Answer: A) Nitrogen. 6. Major part of the air is constituted by A) Carbon dioxide. B) Oxygen. C) Neon. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 7. Air ..... water. A) Up. B) Down. C) Both a&b. D) Hold. Show Answer Correct Answer: D) Hold. 8. WHICH OF THE FOLLOWING IS NOT THE PROPERTY OF AIR? A) AIR IS COMPOUND. B) AIR IS TRANSPARENT. C) AIR IS A SOLUTION. D) AIR OCCUPIES SPACE. Show Answer Correct Answer: A) AIR IS COMPOUND. 9. 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. 10. 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. 11. 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. 12. Which of the following statements is true regarding the earths atmosphere? A) It gets thinner with increase in altitude. B) It gets denser with increase in altitude. C) It remains the same. D) It contains no solid particles. Show Answer Correct Answer: A) It gets thinner with increase in altitude. 13. Which component of air holds 28% of air A) Argon. B) Carbon dioxide. C) Oxygen. D) None of the above. Show Answer Correct Answer: C) Oxygen. 14. Presence of water vapour in the atmosphere is important for the ..... A) Precipitation. B) Evaporation. C) Water Cycle. D) Rotation. Show Answer Correct Answer: C) Water Cycle. 15. What is the composition of Air? A) 78% Oxygen, 21% Water Vapour, Dust & Smoke, 1% Nitrogen. B) 78% Nitrogen, 21% Water Vapour, Dust & Smoke, 1% Oxygen. C) 78% Nitrogen, 21% Oxygen, 1% Water Vapour, Dust & Smoke, other gases. D) NONE OF THE ABOVE. Show Answer Correct Answer: C) 78% Nitrogen, 21% Oxygen, 1% Water Vapour, Dust & Smoke, other gases. 16. Moving air is called ..... A) Breeze. B) Wind. C) Storm. D) None of the above. Show Answer Correct Answer: B) Wind. 17. Why plant need oxygen? A) They breath like human beings and animals. B) Plants also consume oxygen for respiration, but they produce more of it than they consume. That is why we say plants produce oxygen. C) For the process of the Photosynthesis there is 1 more ingredient needed that is oxygen that's why. D) Plants alsoconsume oxygen for respiration, butthey produce more of it than theyconsume. Show Answer Correct Answer: B) Plants also consume oxygen for respiration, but they produce more of it than they consume. That is why we say plants produce oxygen. 18. What causes acid rain (if you remember from last class)? A) Carbon Dioxide. B) Carbon Monoxide. C) Sulphur Dioxide. D) All of these. Show Answer Correct Answer: C) Sulphur Dioxide. 19. While deep under the sea, a deep sea diver cannot utilise the oxygen dissolved in sea water for breathing because he does not have A) Gills. B) Thin skin. C) Stomata. D) Breathing Tubes. Show Answer Correct Answer: A) Gills. 20. The components of air which is taken by Plants to prepare the food?(a) O$_{2}$(b) N$_{2}$(c) CO$_{2}$(d) None of these A) B. B) A. C) D. D) C. Show Answer Correct Answer: D) C. 21. The ozone layer absorbs ..... - ..... % of the UV radiation from the sun. A) 86-78. B) 45-68. C) 93-98. D) 93-99. Show Answer Correct Answer: D) 93-99. 22. The layer of gases around the earth is called as ..... A) Exosphere. B) Mesosphere. C) Thermosphere. D) None of the above. Show Answer Correct Answer: D) None of the above. 23. Which of the following is NOT present in air? A) Helium. B) Nitrogen. C) Iron. D) Oxygen. Show Answer Correct Answer: C) Iron. 24. Air occupies ..... A) Water. B) Weight. C) Space. D) None of the above. Show Answer Correct Answer: C) Space. 25. Air is an opaque material. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 26. In which layer of air is the Ozone layer present? A) Mesosphere. B) Stratosphere. C) Exosphere. D) Troposphere. Show Answer Correct Answer: B) Stratosphere. 27. The process of settling down of particles of a solid in a liquid is A) Filtration. B) Sedimentation. C) Decantation. D) Sublimation. Show Answer Correct Answer: B) Sedimentation. 28. The Gas present in the air in most quantity A) Carbon Dioxide. B) Oxygen. C) Water Vapour. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 29. What gas is present in balloons? A) Carbon Dioxide. B) Hydrogen. C) Helium. D) Oxygen. Show Answer Correct Answer: C) Helium. 30. How much percentage of nitrogen is present in the air? A) 33%. B) 78%. C) 4%. D) 21%. Show Answer Correct Answer: B) 78%. 31. Which of these is called a storm? A) A light wind. B) A moving wind. C) A strong wind. D) None of the above. Show Answer Correct Answer: C) A strong wind. 32. The animal breath what? A) Carbon dioxide. B) Oxygen. C) Dissolved oxygen. D) Nitrogen. E) All of the above. Show Answer Correct Answer: C) Dissolved oxygen. 33. Air is blue in colour. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 34. Carbon dioxide is used for A) Breathing. B) Transpiration. C) Photosynthesis. D) Respiration. Show Answer Correct Answer: C) Photosynthesis. 35. Which gas is produced by plants during respiration? A) Carbon dioxide. B) Nitrogen. C) Argon. D) Oxygen. Show Answer Correct Answer: A) Carbon dioxide. 36. Which type of animals have breathing system both for water and air? A) Amphibians. B) Mammals. C) Reptiles. D) None of the above. Show Answer Correct Answer: A) Amphibians. 37. State true or false air exerts pressure A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 38. Dose air has weight? A) NO. B) Yes. C) Both a & b. D) None of the above. Show Answer Correct Answer: B) Yes. 39. This gas pollutes the enviroment. A) Nitrogen. B) Carbon dioxide. C) Oxygen. D) Hydrogen. Show Answer Correct Answer: B) Carbon dioxide. 40. The component of air that supports burning is called ..... A) OXYGEN. B) NITROGEN. C) All the above. D) None of the above. Show Answer Correct Answer: A) OXYGEN. 41. Most of Earth's air is found close to the surface in the lowest level of the atmosphere called the Troposphere. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 42. What is % of Oxygen in Air A) 21%. B) 85%. C) 1%. D) None of the above. Show Answer Correct Answer: A) 21%. 43. Which of the following in not present in the atmosphere? A) Iron. B) Carbonate. C) Ozone. D) Helium. Show Answer Correct Answer: A) Iron. 44. The ..... makes the windmill rotate. A) Petrol. B) Fuel. C) Wind. D) Electricity. Show Answer Correct Answer: C) Wind. 45. For burig which gas in nessary A) Argon. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Oxygen. 46. Which gas is released into the atmosphere by plants following photosynthesis? A) Argon. B) Nitrogen. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 47. What gas is released into the atmopshere when fossil fuels are burned? A) Nitrogen. B) Carbon dioxide. C) Oxygen. D) Argon. Show Answer Correct Answer: B) Carbon dioxide. 48. Which gas makes up 78% of the atmosphere? A) Water vapor. B) Ozone. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: C) Nitrogen. 49. Which of These gases is present in the least quantity of air? A) Nitrogen. B) Carbon Dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon Dioxide. 50. The balance in Oxygen and carbon di oxide is maintained by A) Evaporation and Photosynthesis. B) Transpiration and respiration. C) Photosynthesis and respiration. D) Combustion and hydrogenation. Show Answer Correct Answer: C) Photosynthesis and respiration. 51. What percentage of Nitrogen is there in the air? A) 78%. B) 23%. C) 28%. D) 87%. Show Answer Correct Answer: A) 78%. 52. Mountaineers carry ..... A) Carbon dioxide cylinder. B) Oxygen cylinder. C) Water vapour cylinder. D) Nitrogen cylinder. Show Answer Correct Answer: B) Oxygen cylinder. 53. The earthworms come out of the soil only during A) Very cold weather. B) Very hot weather. C) Very heavy rains Very little rains. D) None of the above. Show Answer Correct Answer: C) Very heavy rains Very little rains. 54. Clothes dry faster when there is ..... water vapor in air A) Less. B) More. C) Either less or more. D) None of these. Show Answer Correct Answer: A) Less. 55. Of What does the composition of air consist of? A) 99% Nitrogen, 0.5% Oxygen and 0.5% other gasses. B) 78% Nitrogen, 20% Oxygen and 2% other gasses. C) 78% Nitrogen, 21% Oxygen and 1% other gasses. D) 58% Nitrogen, 19% Oxygen and 23% other gasses. Show Answer Correct Answer: C) 78% Nitrogen, 21% Oxygen and 1% other gasses. 56. Plants and trees keep the air clean. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 57. Fish breath through? A) Lungs. B) Gills. C) All the above. D) None of the above. Show Answer Correct Answer: B) Gills. 58. Which form of air is used by the organisms in water? A) Atmospheric oxygen. B) Dissolved oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: B) Dissolved oxygen. 59. Burning fuel produces A) Fog. B) Rain. C) Smoke. D) Smog. Show Answer Correct Answer: C) Smoke. 60. A ..... is an instrument used to show the direction of the wind. A) Wind mill. B) Wind vane. C) Pin wheel. D) Fan. Show Answer Correct Answer: B) Wind vane. ← PreviousNext →Related QuizzesScience QuizzesClass 6 QuizzesClass 6 Science Chapter 15 Air Around Us Quiz 1Class 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books