This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of air pressure do clear skies indicate? A) High pressure. B) Low pressure. C) Zero pressure. D) Medium pressure. Show Answer Correct Answer: A) High pressure. 2. Why do you need air? A) To smell. B) To feel. C) To breathe. D) Actually, we do NOT need air. E) I do not know. Show Answer Correct Answer: C) To breathe. 3. What is the nose gear? A) Wheel/tire. B) Water hose. C) Kite. D) Basketball. Show Answer Correct Answer: A) Wheel/tire. 4. Our homes should be well-ventilated. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. How many of the 15 most populated cities are in india A) 13. B) 1. C) 9. D) 10. Show Answer Correct Answer: D) 10. 6. Which of the following is an example of a Gaseous air pollutant? A) Acid rain. B) Stones. C) Carbon monoxide. D) Snow. Show Answer Correct Answer: C) Carbon monoxide. 7. Air pressure and density both decrease A) Higher up the mountain you go. B) Lower on the mountain you go. C) All the above. D) None of the above. Show Answer Correct Answer: A) Higher up the mountain you go. 8. Smoke and germs make the air ..... A) Pure. B) Impure. C) None of the above. D) None of the above. Show Answer Correct Answer: B) Impure. 9. What instrument do meteorologists use to measure atmospheric pressure? A) Barometer. B) Thermometer. C) Rain gauge. D) None of the above. Show Answer Correct Answer: A) Barometer. 10. Where your luggage may be checked to see if you are bringing illegal goods into the country A) Gate. B) Customs. C) Runway. D) Security. Show Answer Correct Answer: B) Customs. 11. The upward force on an object falling through the air is ..... A) Air resistance. B) Inertia. C) Gravity. D) Terminal velocity. Show Answer Correct Answer: A) Air resistance. 12. Smog is what kind of pollution? A) Garbage. B) Water. C) Air. D) Land. Show Answer Correct Answer: C) Air. 13. According to the boxed information titled "ACTIVITY SHEET:Does Air Weigh Anything?" , what should the reader do right after tying an empty balloon to each string? A) Untie one balloon and blow it up. B) Run a piece of string through the center hole. C) Add small amounts of weight to the higher end of the yardstick, if it is uneven. D) Drill a small hole. Show Answer Correct Answer: C) Add small amounts of weight to the higher end of the yardstick, if it is uneven. 14. How Can we prevent Air pollution? A) By planting More trees. B) By using cycle or walk for short distances. C) By Avoiding boursting firecrackers. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Reforestation activities by planting trees in bare forests affect the process of hydrological cycles and have a positive impact on flood prevention.The function of forest trees in the hydrological cycle is ..... A) Accelerate surface flow. B) Slow down the rain. C) Reducing rainfall. D) Improve infiltration. Show Answer Correct Answer: D) Improve infiltration. 16. Tornadoes and hurricanes are large areas of ..... pressure. A) No. B) High. C) Average. D) Low. Show Answer Correct Answer: D) Low. 17. Burning of coal releases large amount of ..... A) Oxygen. B) Carbon dioxide. C) Nitrogen. D) None of These. Show Answer Correct Answer: B) Carbon dioxide. 18. What is the correct order of gases, from LARGEST to smallest amount? A) Oxygen, Nitrogen, other gases. B) Nitrogen, Oxygen, Other gases. C) Other gases, Oxygen, Nitrogen. D) None of the above. Show Answer Correct Answer: B) Nitrogen, Oxygen, Other gases. 19. *Particulate Pollution in China Dropped by 29% Within 6 Years A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 20. Air pollution means that ..... A) There are dangerous things like gas and smoke in the air. B) It's cloudy outside. C) People need air to breathe. D) People burn fossil fuels to drive cars. Show Answer Correct Answer: A) There are dangerous things like gas and smoke in the air. 21. The gas which helps in burning A) Oxygen. B) Nitrogen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: A) Oxygen. 22. A storm that occurs with thunder and lightning is called a ..... A) Thuderstorm. B) Storm. C) Breeze. D) Hurricane. Show Answer Correct Answer: A) Thuderstorm. 23. Low pressure will usually bring what kind of weather? A) Sunny. B) Calm. C) Stormy. D) None of the above. Show Answer Correct Answer: C) Stormy. 24. Secondary air pollutant is: A) PAN. B) CO. C) SO,. D) Aerosols. Show Answer Correct Answer: A) PAN. 25. Full form of (CFCs). A) Chlorolurocarbons. B) Chlorofluorocarbons. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chlorofluorocarbons. ← PreviousNext →Related 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 8Class 7 Geography Chapter 4 Air Quiz 9Class 7 Geography Chapter 4 Air Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books