This quiz works best with JavaScript enabled. Home > Cbse > Class 6 > Science > Air Around Us > Class 6 Science Chapter 15 Air Around Us – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 6 Science Chapter 15 Air Around Us Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Water vapour present in the air supports water cycle. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. Air moving with gentle speed A) Wind. B) Breeze. C) Sand storm. D) Oxygen. Show Answer Correct Answer: B) Breeze. 3. Birds, bats and insects can fly in the absence of air. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 4. Bubbles comes out from the empty glass when pushed in the water says that A) Water is present in bottle. B) Air is present in bottle. C) Both water and air is in the bottles. D) None of the above. Show Answer Correct Answer: B) Air is present in bottle. 5. Warm air is ..... as compared to cold air. A) Heavier. B) Lighter. C) No change. D) None of the above. Show Answer Correct Answer: B) Lighter. 6. What is the primary component of air by volume? A) Oxygen. B) Nitrogen. C) Argon. D) Carbon Dioxide. Show Answer Correct Answer: B) Nitrogen. 7. Air is all around us, a thick layer of air surrounds the earth, this blanket of air is called A) Ecosystem. B) Biosphere. C) Atmosphere. D) None of the above. Show Answer Correct Answer: C) Atmosphere. 8. Which Type of Gas does plants use to prepare food? A) Carbon Dioxide. B) Argon. C) Hydrogen. D) None of the above. Show Answer Correct Answer: A) Carbon Dioxide. 9. Which gas is helpful for burning fire? A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) All. Show Answer Correct Answer: A) Oxygen. 10. Name the organism and its organ which take oxygen from the air dissolved in water. A) Human, lungs. B) Fish, gills. C) Animals, lungs. D) None of the above. Show Answer Correct Answer: B) Fish, gills. 11. Water that is floating in the air is called ..... A) Precipitation. B) Water. C) Water vapour. D) None of the above. Show Answer Correct Answer: C) Water vapour. 12. ..... is a device which measures the air pressure. A) Anemometer. B) Barometer. C) Thermometer. D) Ammeter. Show Answer Correct Answer: B) Barometer. 13. We inhale air through A) Ear. B) Eye. C) Nose. D) None. Show Answer Correct Answer: C) Nose. 14. ..... is used in electric bulbs A) Oxygen. B) Neon. C) Hydrogen. D) Argon. Show Answer Correct Answer: D) Argon. 15. Micro organisms present in the soil do not require oxygen. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 16. ..... supports burning. A) Carbon Dioxide. B) Oxygen. C) Helium. D) Water. Show Answer Correct Answer: B) Oxygen. 17. Statement A:Nitrogen is used in protein synthesisStatement B:Proteins are required by living organisms to grown and repair their body parts A) Only Statement A is correct. B) Only Statement B is correct. C) Both are incorrect. D) Both are correct. Show Answer Correct Answer: D) Both are correct. 18. Which two main process maintain the balance of carbon dioxide and oxygen in the atmosphere? A) Photosythesis and burning. B) Burning and resperation. C) Resperation and photosythesis. D) None of these. Show Answer Correct Answer: C) Resperation and photosythesis. 19. When air comes in contact with a cool surface, it ..... A) Evaporates. B) Condenses. C) Solidifies. D) Melts. Show Answer Correct Answer: B) Condenses. 20. Mammals exhale which gas? A) Oxygen. B) Carbon dioxide. C) All the above. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 21. The cycle of consumption and release of oxygen in nature is called ..... A) Carbon cycle. B) Photosynthesis. C) Oxygen cycle. D) None. Show Answer Correct Answer: C) Oxygen cycle. 22. All living organism need ..... for respiration A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Oxygen. 23. Which component of air does not support in the burning A) Oxygen. B) Nitrogen. C) Hydrogen. D) None of the above. Show Answer Correct Answer: B) Nitrogen. 24. The moving air is known as- A) None Of The given. B) Typhoon. C) Glacier. D) Wind. Show Answer Correct Answer: D) Wind. 25. Which of these would be best experiment to show the presence of air around us? A) Keeping a bowl of water in sunlight for one hour. B) Keeping a glass of water in freezer for half an hour. C) Placing a weather cock on an open roof away from any obstacle. D) Placing bricks one upon another to make a small stack in an open lawn. Show Answer Correct Answer: C) Placing a weather cock on an open roof away from any obstacle. 26. Air occupies space and has: A) Colour. B) Smell. C) Mass. D) None of these. Show Answer Correct Answer: C) Mass. 27. Air is a mixture of gases A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 28. Which of the following is INCORRECT? A) Carbon dioxide is non-combustible. B) Nitrogen is non-combustible. C) Hydrogen is non-combustible. D) All of these. Show Answer Correct Answer: C) Hydrogen is non-combustible. 29. Which air dose not support burning of fire? A) Oxygen. B) Nitrogen. C) Carbon-dioxide. D) All. Show Answer Correct Answer: B) Nitrogen. 30. Plants and animals depend on each other for exchange of ..... and ..... from air. A) Carbon dioxide, nitrogen. B) Argon, krypton. C) Oxygen, carbon dioxide. D) Nitrogen, neon. Show Answer Correct Answer: C) Oxygen, carbon dioxide. 31. Mountaineers carry cylinders with them. A) Water. B) Carbon Dioxide. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: C) Oxygen. 32. What causes the fizz sound while opening a cold drink bottle? A) The water. B) The sugar. C) The air. D) None of the above. Show Answer Correct Answer: C) The air. 33. What is the Outer Layer of the Earth? A) I Don't Know. B) There are no Layers. C) Atmosphere. D) Stratosphere. E) Troposphere. Show Answer Correct Answer: C) Atmosphere. 34. Which gas is the major part of air? A) Carbon dioxide. B) Nitrogen. C) Water vapor. D) Oxygen. Show Answer Correct Answer: B) Nitrogen. 35. Which out the following gases supports burning? A) Nitrogen. B) Oxygen. C) Argon. D) Carbon di-Oxide. Show Answer Correct Answer: B) Oxygen. 36. The process of absorbing carbon dioxide from air and preparing the food by plants is called ..... A) Transpiration. B) Photosynthesis. C) Breathing of plants. D) None of the above. Show Answer Correct Answer: B) Photosynthesis. 37. Living things need Nitrogen for ..... A) Living. B) Growth. C) Breathing. D) Shrinking. Show Answer Correct Answer: B) Growth. 38. Mountaineers carry oxygen cylinder with them because A) Oxygen keeps them warm at low temperature. B) There is deficiency of oxygen on mountains at high altitude. C) Oxygen is used for cooking. D) There is no oxygen on high mountains. Show Answer Correct Answer: B) There is deficiency of oxygen on mountains at high altitude. 39. What is air made up of? A) Oxygen, Hydrogen, Helium, Dust and smoke. B) Oxygen, Water Vapour, Carbon-dioxide, Nitrogen, Dust and Smoke. C) Carbon-dioxide, Helium, Dust and Oxygen. D) Carbon-monoxide, Nitrogen, Helium, Dust and Water Vapour. Show Answer Correct Answer: B) Oxygen, Water Vapour, Carbon-dioxide, Nitrogen, Dust and Smoke. 40. Which gas is needed for respiration? A) Carbon Dioxide. B) Hydrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: C) Oxygen. 41. What gas can't plant absorb directly? A) Oxygen. B) Methane. C) Nitrogen. D) All of these. Show Answer Correct Answer: C) Nitrogen. 42. The largest amount of gas in the air is A) Nitrogen. B) Argon. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: A) Nitrogen. 43. ..... gas occupies the major part of composition of air. A) Nitrogen. B) Oxygen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: A) Nitrogen. 44. What is required for photosynthesis? A) Heat. B) Sunlight. C) Water vapor. D) Oxygen. Show Answer Correct Answer: B) Sunlight. 45. Which gas is used for respiration by living things? A) Carbon dioxide. B) Nitrogen. C) Ozone. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 46. Which of the following lives in the soil? A) Earthworm. B) Dog. C) Crocodile. D) Squirrel. Show Answer Correct Answer: A) Earthworm. 47. How do plants get nitrogen from the air? A) From their roots. B) From their leaves. C) From their stomata. D) They do not. Show Answer Correct Answer: D) They do not. 48. Fill in the blank:The ..... makes the windmill rotate A) Wind. B) Soil. C) Machines. D) Water. Show Answer Correct Answer: A) Wind. 49. Which gas is produced when something is burned? A) Carbon Dioxide. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: A) Carbon Dioxide. 50. Air helps in the movements of sailing yachts and glider but plays no role in the flight of birds and aeroplanes. TRUE or FALSE? A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 51. What gas is 78% of our air? A) Oxygen. B) Other gases. C) Nitrogen. D) None of the above. Show Answer Correct Answer: C) Nitrogen. 52. The burning of fuel produces ..... A) Dew. B) Wind. C) Smoke. D) None of the above. Show Answer Correct Answer: C) Smoke. 53. Which of the following are flammable? A) Hydrogen. B) Oxygen. C) Water Vapour. D) Helium. Show Answer Correct Answer: A) Hydrogen. 54. Gases are invisible A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. The presence of dust particles in air varies from time to time, and from place to place. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. Most living things breath in ..... A) Nitrogen. B) Carbon Dioxide. C) Oxygen. D) Aragon. Show Answer Correct Answer: C) Oxygen. 57. The air in motion is called A) Air. B) Wind. C) Lightnig. D) Argon. Show Answer Correct Answer: A) Air. 58. The aquatic animals use dissolved oxygen in water for respiration. This is possible because oxygen is ..... in water. A) SOLVABLE. B) INSOLUBLE. C) All the above. D) None of the above. Show Answer Correct Answer: A) SOLVABLE. 59. 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. Show Answer Correct Answer: C) CO$_{2}$. 60. Which of the following is not true about oxygen? A) Oxygen is used to breath. B) Oxygen is a greenhouse gas. C) Oxygen takes up 21% of air. D) None of the above. Show Answer Correct Answer: B) Oxygen is a greenhouse gas. ← 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 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