This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 17 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the gas causes air pollution? A) Carbon dioxide. B) Sulphur dioxide. C) Carbon monoxide. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. When air contains lots of water vapour, then the air is ..... A) Humid. B) Dry. C) Both. D) None of the above. Show Answer Correct Answer: A) Humid. 3. In the continental US, air masses travel consistently in the same direction. Which way do they travel? A) West to East. B) Northeast to Southwast. C) East to West. D) Southeast to West. Show Answer Correct Answer: A) West to East. 4. How do we name air masses? A) Water and temperature. B) Air pressure. C) Humidity and temperature. D) Cold and warm. Show Answer Correct Answer: C) Humidity and temperature. 5. The column of air above you is ..... A) Altitude. B) Elevation. C) Air pressue. D) Heat. Show Answer Correct Answer: C) Air pressue. 6. We should plant trees to keep the air ..... A) Clean. B) Dirty. C) Unclean. D) None of the above. Show Answer Correct Answer: A) Clean. 7. Air pollution generally cause ..... A) Respiratory Problems. B) Brain Damage. C) Problems related to Digestive System. D) None of the above. Show Answer Correct Answer: A) Respiratory Problems. 8. What is the front of the airplane called? A) Back. B) Nose. C) Leg. D) Heart. Show Answer Correct Answer: B) Nose. 9. Which of the following is NOT a primary pollutant? A) Sulfur dioxide. B) Smog. C) Nitric oxides. D) Volatile organic compounds. Show Answer Correct Answer: B) Smog. 10. Can cause burning of the skin A) Sulfur dioxide. B) Nitrogen oxides. C) Particle matter. D) Lead. Show Answer Correct Answer: A) Sulfur dioxide. 11. Which is true of air pollution and human health? A) Years of research link air pollution to lung diseases, birth defects, and cancer. B) Air pollution is commonly listed as a cause of death. C) None of the health effects of air pollution are reversible. D) Healthy adults are most affected by air pollution. Show Answer Correct Answer: A) Years of research link air pollution to lung diseases, birth defects, and cancer. 12. The clean air act gives the U.S the power to set air quality standards. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. How does air pollution affect human health? A) It can cause respiratory problems. B) It makes us obese. C) We feel constipated. D) All of the above. Show Answer Correct Answer: A) It can cause respiratory problems. 14. Which is not a way in which air pressure helps us? A) Pumping of water through a hand pump. B) Filling ink in a fountain pen. C) Flying kites. D) Drinking water. Show Answer Correct Answer: D) Drinking water. 15. What is the waste product of respiration? A) Carbon Dioxide. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: A) Carbon Dioxide. 16. What type of air mass has cool, dry air and forms over land? A) Maritime Polar. B) Continental Tropical. C) Continental Polar. D) Maritime Tropical. Show Answer Correct Answer: C) Continental Polar. 17. Cyclone Collectors works with the principles of A) Gravitational force. B) Centrifugal force. C) Both the force. D) None of the above. Show Answer Correct Answer: B) Centrifugal force. 18. A continuous moving strip on which passengers' bags are put for collection in an airport. A) Carousel. B) Baggage reclaim. C) Gate. D) None of the above. Show Answer Correct Answer: A) Carousel. 19. The pilots and other people who work in the plane are the ..... A) Cabin crew. B) Flight team. C) Staff. D) Flight band. Show Answer Correct Answer: A) Cabin crew. 20. The higher the temperature the ..... is the solubility of air in water A) Lower. B) Medium. C) Higher. D) None of these. Show Answer Correct Answer: A) Lower. 21. What does MAC stand for? A) Mechanical Air Conditioning. B) Mobile Air Compressor. C) Mechanical Air Compressor. D) MobileAir Conditioning. Show Answer Correct Answer: D) MobileAir Conditioning. 22. We can see air but cannot feel air A) True. B) False. C) I do not know. D) None of the above. Show Answer Correct Answer: B) False. 23. There are three States of matter. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. ..... are very small living things that make people ill. A) Water vapour. B) Dust. C) Smoke. D) Germs. Show Answer Correct Answer: D) Germs. 25. What types of air masses form over land? A) Continental. B) Maritime. C) Tropical. D) Polar. Show Answer Correct Answer: A) Continental. 26. ..... is a harmful metal present in petrol, diesel, lead batteries, paints, paints, and dyes. A) Sulphur Trioxide. B) Sulphur Dioxide. C) Lead. D) None of the above. Show Answer Correct Answer: C) Lead. 27. When air moves from sea to land during day time, it is called ..... A) Sea breeze. B) Land breeze. C) Breeze. D) Wind. Show Answer Correct Answer: A) Sea breeze. 28. When air is heated A) Lighter goes up and cold air is denser. B) Light air goes down and Coll air goes up. C) Light air don't move and cool air moves. D) None of the above. Show Answer Correct Answer: A) Lighter goes up and cold air is denser. 29. A balloon or rubber gloves ..... as more and more air is put in it. A) Expands. B) Squeezed. C) Pumps. D) Pop. Show Answer Correct Answer: A) Expands. 30. The upward force which is exerted against a falling object is A) Gravity. B) Intertia. C) Air resistance. D) Terminal velocity. Show Answer Correct Answer: C) Air resistance. 31. Which of these is present in air? A) Glass. B) Grass. C) Smoke. D) None of the above. Show Answer Correct Answer: C) Smoke. 32. The word 'compressed' means ..... A) To have fun. B) To press tightly. C) All the above. D) None of the above. Show Answer Correct Answer: B) To press tightly. 33. What kind of air pressure does dense air have? A) Normal air pressure. B) High air pressure. C) Low air pressure. D) None of the above. Show Answer Correct Answer: B) High air pressure. 34. Where is the Ozone Layer found in our atmosphere? A) Troposphere (lower portion). B) Stratosphere (upper portion). C) All the above. D) None of the above. Show Answer Correct Answer: B) Stratosphere (upper portion). 35. What role do greenhouse gases play in air pollution? A) Greenhouse gases have no impact on air pollution. B) Greenhouse gases contribute to the greenhouse effect but do not cause air pollution. C) Greenhouse gases trap heat in the atmosphere and contribute to air pollution. D) Greenhouse gases only affect water pollution, not air pollution. Show Answer Correct Answer: C) Greenhouse gases trap heat in the atmosphere and contribute to air pollution. 36. On a cold winter day with temperatures below 32$^\circ$F, the local meteorologist records falling air pressure. Which type of weather will most likely occur? A) Clear skies. B) Rain. C) A snowstorm. D) A thunderstorm. Show Answer Correct Answer: C) A snowstorm. 37. Which front forms widespread clouds, rain, or snow? A) Occluded front. B) Stationary front. C) Warm front. D) Cold front. Show Answer Correct Answer: A) Occluded front. 38. How should R134a be stored to meet safetyrequirements? A) Under pressure as a vapour. B) Under pressure as a gas. C) Under no pressure as a vapour. D) Under no pressure as a gas. Show Answer Correct Answer: B) Under pressure as a gas. 39. What is air pollution A) Contamition of air. B) Introduction of useful subsantes in air. C) Contamination of air. D) Purity of air. Show Answer Correct Answer: C) Contamination of air. 40. Which of the following gases cause greenhouse effect? A) Nitrogen. B) Helium. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 41. Nitrogen is a ..... gas. A) Active. B) Inactive. C) All of these. D) None of these. Show Answer Correct Answer: B) Inactive. 42. Which of the following would be carriedout to confirm a system contained no refrigerant? A) Press the service port valve on the low pressure side and listen for a gas leak. B) Connect the gauges to both high and lowpressure ports to confirm a vacuum is present. C) Connect the Air Conditioning equipmentand carry out a full recovery. D) Connect the gauges to both high and low pressure ports to confirm no pressure is present. Show Answer Correct Answer: D) Connect the gauges to both high and low pressure ports to confirm no pressure is present. 43. Water is used as a coolant in vehicles. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. Air is a ..... form of matter A) Gaseous. B) Solid. C) Liquid. D) None of the above. Show Answer Correct Answer: A) Gaseous. 45. Air is ..... than water. A) Heavier. B) Lighter. C) All the above. D) None of the above. Show Answer Correct Answer: B) Lighter. 46. What is the use of wind vane? A) Check the amount of rainfall. B) Measures atmospheric pressure. C) Shows the direction of the wind. D) Standard unit of measuring wind. Show Answer Correct Answer: C) Shows the direction of the wind. 47. Which type of weather is usually associated with a cP air mass? A) Moist and cool. B) Dry and warm. C) Moist and warm. D) Dry and cool. Show Answer Correct Answer: D) Dry and cool. 48. A medical condition, where people in a building suffer from symptoms of illness of feel unwell without any specific reason is called A) Air quality degradation. B) Noise. C) Sick building syndrome. D) Indoor air quality management. Show Answer Correct Answer: C) Sick building syndrome. 49. Which statement best describes temperature patterns along the equator? A) Hot in summer cold in winter. B) Consistently warm year round. C) Consistently cool year round. D) None of the above. Show Answer Correct Answer: B) Consistently warm year round. 50. True or False. As speed increases, pressure decreases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 51. Dxb pair-from-gymq ..... is the gi A) WH. B) EH. C) AT. D) None of the above. Show Answer Correct Answer: C) AT. 52. The scientists that study the weather are called? A) Biologists. B) Windtologists. C) Meteorologists. D) Paleontologists. Show Answer Correct Answer: C) Meteorologists. 53. What is a parachute designed to maximize? A) Gravity. B) Air Resistance. C) Thrust. D) Air Pressure. Show Answer Correct Answer: B) Air Resistance. 54. Warm air weighs more or less than cold air? A) More. B) Less. C) All the above. D) None of the above. Show Answer Correct Answer: B) Less. 55. Smog is a mixture of smoke and fog. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 56. The covering layer of air around the earth is called ..... A) Temperature. B) Atmosphere. C) Wind. D) None of the above. Show Answer Correct Answer: B) Atmosphere. 57. Who founded the Tuskegee Institute? A) W.E.B.Wood. B) Georg Washington Carver. C) Thomas Edison. D) Booker T. Washington. Show Answer Correct Answer: D) Booker T. Washington. 58. What is land breeze A) The cold air that moves from land to sea. B) The cold air that moves from sea to land. C) All the above. D) None of the above. Show Answer Correct Answer: A) The cold air that moves from land to sea. 59. This is the type of weather A) Summer. B) Winter. C) Sunny. D) None of the above. Show Answer Correct Answer: C) Sunny. 60. Where do MARITIME air masses form? A) Over water. B) Over land. C) All the above. D) None of the above. Show Answer Correct Answer: A) Over water. ← PreviousNext →Related QuizzesGeography QuizzesClass 7 QuizzesClass 7 Geography Chapter 4 Air Quiz 1Class 7 Geography Chapter 4 Air Quiz 2Class 7 Geography Chapter 4 Air Quiz 3Class 7 Geography Chapter 4 Air Quiz 4Class 7 Geography Chapter 4 Air Quiz 5Class 7 Geography Chapter 4 Air Quiz 6Class 7 Geography Chapter 4 Air Quiz 7Class 7 Geography Chapter 4 Air Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books