This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How is acid rain formed? A) Carbon monoxide and carbon dioxide mix with water in the ocean. B) Carbon dioxide and oxygen mix with water in the air. C) Sulfur dioxide and carbon monoxide mix with lake water. D) Sulfur dioxide and nitrogen oxide mix with water in the air. Show Answer Correct Answer: D) Sulfur dioxide and nitrogen oxide mix with water in the air. 2. ..... is the instrument used to measure air pressure. A) Watch. B) Barometer. C) Thermometer. D) Mercury. Show Answer Correct Answer: B) Barometer. 3. Air is always present around us? A) TRUE. B) FALSE. C) MAY BE. D) None of the above. Show Answer Correct Answer: A) TRUE. 4. Used on Industries/factory stacks to remove gases and particulate. A) Filter Strips. B) Emission reducers. C) Filters. D) Scrubbers/absorbents. Show Answer Correct Answer: D) Scrubbers/absorbents. 5. Which of the following does not contain air? A) Empty Bucket. B) Blown up Balloon. C) Packet of Chips. D) None of these. Show Answer Correct Answer: D) None of these. 6. What is the climate of chennai? A) Hot and wet. B) Hot and dry. C) Wet and dry. D) Cold and dryTagsclimate. Show Answer Correct Answer: C) Wet and dry. 7. Where do passengers wait before boarding the plane? At the ..... A) Departure board. B) Waiting room. C) Departure lounge. D) Duty-free hall. Show Answer Correct Answer: C) Departure lounge. 8. Which one is treated as BAD OZONE A) Mesospheric ozone. B) Atmospheric ozone. C) Tropospheric ozone. D) Stratospheric ozone. Show Answer Correct Answer: C) Tropospheric ozone. 9. What was the name of Shah Jaha's wife? A) Sita. B) Laxmi. C) Mumtaz Mahal. D) Mummy is expensive. Show Answer Correct Answer: C) Mumtaz Mahal. 10. What events cause the balloon to take off? A) A strong fan is used to blow up the balloon. A burner heats the air inside the balloon. B) A strong wind picks the balloon up off the ground. C) A strong fire picks the balloon up off the ground. D) The balloon doesn't take off. Gravity is holding it down. Show Answer Correct Answer: A) A strong fan is used to blow up the balloon. A burner heats the air inside the balloon. 11. TheirThereWearWhereAll have spelling A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. When the air is heated it becomes A) Lighter. B) Heavier. C) Colder. D) None of these. Show Answer Correct Answer: A) Lighter. 13. What is aerodynamic? A) Car speed. B) The way air moves around things. C) The car body. D) None of the above. Show Answer Correct Answer: B) The way air moves around things. 14. What are the effects of air pollution on wildlife? A) Animals start feeling happy. B) It contributes to habitat loss. C) It gives animals a longer life-span. D) All of the above. Show Answer Correct Answer: B) It contributes to habitat loss. 15. What historical events had an effect on ballooning? A) Kite flying and fire. B) Drawings, kite flying, and silk. C) Lighting a fire under paper. D) Kite flying, stories, drawings, lighting a fire under paper and silk. Show Answer Correct Answer: D) Kite flying, stories, drawings, lighting a fire under paper and silk. 16. More molecules close together, means density is: A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: A) High. 17. At what temprature does water boil in? A) 200$^\circ$ c. B) 1000$^\circ$ c. C) 100$^\circ$ c. D) 50$^\circ$ c. Show Answer Correct Answer: C) 100$^\circ$ c. 18. What is the % of nitrogen in air? A) 60%. B) 75%. C) 71%. D) 78%. Show Answer Correct Answer: D) 78%. 19. When the heat stored in the body is ..... the human body feels comfortable. A) Positive. B) Negative. C) Infinite. D) Zero. Show Answer Correct Answer: D) Zero. 20. In which war did the Tuskegee Airmen serve? A) Civil War. B) World War I. C) Vietnam War. D) World War II. Show Answer Correct Answer: D) World War II. 21. Which of these gets shape with the help of air? A) Fan. B) Chair. C) Balloon. D) None of the above. Show Answer Correct Answer: C) Balloon. 22. Why is a football filled with air heavier than a flat one? A) Because air has weight. B) Because it is filled with water. C) All the above. D) None of the above. Show Answer Correct Answer: A) Because air has weight. 23. A flight which goes across continents is usually called a ..... flight. A) Direct. B) Connecting. C) High. D) Long-haul. Show Answer Correct Answer: D) Long-haul. 24. Air pollution causes all of the following, except A) Smog. B) Healthy air to breath. C) Holes in the ozone layer. D) Increased particles in the air. E) Acid rain. Show Answer Correct Answer: B) Healthy air to breath. 25. ..... helps in photosynthesis. A) Inert gas. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon dioxide. 26. Does Zuko's uncle have a son? A) No. B) Yes. C) All the above. D) None of the above. Show Answer Correct Answer: B) Yes. 27. As the air is warmed how does it density change? A) It increases (Sinks). B) It Remains the same. C) It decreases (Rises). D) None of the above. Show Answer Correct Answer: C) It decreases (Rises). 28. In which season, many flowers will bloom? A) Summer. B) Spring. C) Autumn. D) None of the above. Show Answer Correct Answer: B) Spring. 29. Air does many different things on ..... even though you can't see it. A) Earth. B) Mars. C) All the above. D) None of the above. Show Answer Correct Answer: A) Earth. 30. Do air planes have wings A) No. B) Yes. C) All the above. D) None of the above. Show Answer Correct Answer: A) No. 31. When was the first airplane made? A) 1905. B) 1908. C) 1923. D) 1903. Show Answer Correct Answer: D) 1903. 32. When does land breeze occur? A) Night time. B) Day time. C) All the above. D) None of the above. Show Answer Correct Answer: A) Night time. 33. The air is very thin in this layer of atmosphere. A) Exosphere. B) Troposphere. C) Mesosphere. D) Stratosphere. Show Answer Correct Answer: A) Exosphere. 34. Define air mass. A) 89. B) ?. C) A large region of air that has similar temperature and humidity. D) A cloud. Show Answer Correct Answer: C) A large region of air that has similar temperature and humidity. 35. Assuming normal atmospheric pressure atwhat temperature would R134a boil? A) -103.3 degrees C. B) -26.3 degrees Fahrenheit. C) -103.3 degrees Fahrenheit. D) -26.3 degrees C. Show Answer Correct Answer: D) -26.3 degrees C. 36. Rougher surfaces have ..... A) Greater friction. B) Less friction. C) The same level of friction. D) None of the above. Show Answer Correct Answer: A) Greater friction. 37. What type of government did the fire nation have A) Dictatorship. B) Democracy. C) Republic. D) Monarchy. Show Answer Correct Answer: A) Dictatorship. 38. Which element of weather is measured in degree Celsius? A) Gravity. B) Pressure. C) Temperature. D) Wind. Show Answer Correct Answer: C) Temperature. 39. ..... can blow away things. A) Breeze. B) Storm. C) All the above. D) None of the above. Show Answer Correct Answer: B) Storm. 40. Indoor air pollution is caused by ..... A) Chemicals we bring into our homes and use. B) Outdoor air pollution entering the home. C) Fumes from cooking and baking. D) Smog and acid precipitation. Show Answer Correct Answer: A) Chemicals we bring into our homes and use. 41. The nitrogen-converting bacteria, Rhizome are found in the ..... ? A) Root nodules. B) Plant Tagsairnitrogen. C) Roots. D) Soil. Show Answer Correct Answer: A) Root nodules. 42. Which of these problems caused by air pollution? A) Reduce food sources of humans. B) Respiratory Problems. C) Decrease in global temperature. D) Increase disease for humans. Show Answer Correct Answer: B) Respiratory Problems. 43. The large part of the air is covered by ..... A) Nitrogen. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: A) Nitrogen. 44. Air transport is the ..... way to travel. A) Cheapest. B) Fastest. C) Slow. D) Slowest. Show Answer Correct Answer: B) Fastest. 45. All animals breathe A) Carbon dioxide. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: B) Oxygen. 46. The ..... moves left and right to control the left or right movement of the plane A) Rudder. B) Tail. C) Fin. D) None of the above. Show Answer Correct Answer: A) Rudder. 47. If contamination within an airconditioning system is suspected and a flushing procedure is to be carried outwhat component should also be changed? A) ReceiverDrier. B) Compressor. C) TXV. D) Condenser. Show Answer Correct Answer: A) ReceiverDrier. 48. In the morning, Carlos noticed that the air pressure reading on the barometer was beginning to drop. What kind of weather can he most likely expect in the evening? A) The weather will be cloudy with a chance of rain. B) The weather will be warmer with clear skies. C) The weather will be clear and windy. D) The weather will be sunny and cool. Show Answer Correct Answer: A) The weather will be cloudy with a chance of rain. 49. What are are other uses of AIR? A) Hearing, Regulating Temperature,. B) Hearing, Regulating Temparature, Compressed Air, Wind. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hearing, Regulating Temparature, Compressed Air, Wind. 50. ..... present in air is called humidity. (Fill in the blanks) A) Water. B) Oxygen. C) Dust. D) Water vapour. Show Answer Correct Answer: D) Water vapour. 51. Polluted air contains A) Germs. B) Smoke. C) Dust. D) All of these. Show Answer Correct Answer: D) All of these. 52. Air particles flow from areas of high to areas of A) Equal pressure. B) Neutral pressure. C) Low pressure. D) High pressure. Show Answer Correct Answer: C) Low pressure. 53. Wich of the following gases are present most in the atmosphere? A) Nitrogen. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: A) Nitrogen. 54. What are the effects of warm fronts on weather? A) Warm fronts bring cooler temperatures and strong winds. B) Warm fronts have no effect on weather. C) Warm fronts bring colder temperatures and heavy snowfall. D) Warm fronts bring warmer temperatures and steady precipitation. Show Answer Correct Answer: D) Warm fronts bring warmer temperatures and steady precipitation. 55. The temperature decreases with increase in the attitude in which of the following layer? A) IONOSPHERE. B) STRATOSPHERE. C) MESOSPHERE. D) TROPOSPHERE. Show Answer Correct Answer: D) TROPOSPHERE. 56. Which gas is required by plants for photosynthesis. A) Oxygen. B) Carbon dioxide. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 57. The plants take nitrogen directly from the atmosphere. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 58. Which of the following activity requires presence of air? A) Flying a kite. B) Walking to school. C) Watering a plant. D) None of the above. Show Answer Correct Answer: A) Flying a kite. 59. The bottom of valleys typically has high or low pressure? A) High pressure. B) Low pressure. C) All the above. D) None of the above. Show Answer Correct Answer: A) High pressure. 60. A mixture of smoke, fog and chemicals in the air is known as ..... A) Oxygen. B) Radiation. C) Smog. D) None of the above. Show Answer Correct Answer: C) Smog. ← 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 8Class 7 Geography Chapter 4 Air Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books