This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 30 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the best fabric to wear on a rainy day? A) Wool. B) Cotton. C) Nylon. D) None of the above. Show Answer Correct Answer: C) Nylon. 2. Chemical reactions involving sunlight, air, car exhaust, and ozone cause which of the following to form? A) Primary pollutants. B) Sick-building syndrome. C) Smog. D) Acid rain. Show Answer Correct Answer: C) Smog. 3. How much km does stratosphere extend for? A) 20. B) 30. C) 25. D) 85. Show Answer Correct Answer: B) 30. 4. The ozone layer protects us from (a) A) A. UV rays. B) CFCs. C) Increased atmospheric heat. D) Decreased atmospheric heat. Show Answer Correct Answer: A) A. UV rays. 5. What is the value of the optimum effective temperature in summer? A) 23. B) 22. C) 21. D) 24. Show Answer Correct Answer: B) 22. 6. Air is mixture of many ..... A) Land. B) Water. C) Gases. D) None of the above. Show Answer Correct Answer: C) Gases. 7. Which type of air mass bring COLD and WET weather? A) Maritime Polar (mP). B) Maritime Tropical (mT). C) Continental Polar (cP). D) Continental Tropical (cT). Show Answer Correct Answer: A) Maritime Polar (mP). 8. How much % oxygen are their in earth A) (21%). B) (78%). C) (0.04). D) (0.03%). E) (0.93%). Show Answer Correct Answer: A) (21%). 9. Which sentence supports the idea that presidents feel comfortable aboard Air Force One? A) Air Force One has the ability to refuel in flight, so it can fly as long as it needs to. B) His view is that presidents seem more relaxed and act less formal aboard Air Force One than in the Oval Office. C) This was perhaps the most famous version of Air Force One, and it carried eight presidents over the years. D) Presidents have always had to travel, of course. Show Answer Correct Answer: B) His view is that presidents seem more relaxed and act less formal aboard Air Force One than in the Oval Office. 10. Clouds are formed from A) Air. B) Candy. C) Tiny droplets of water. D) None of the above. Show Answer Correct Answer: C) Tiny droplets of water. 11. Which of the following describes a potential human health effect most likely to be associated with a thermal inversion? A) Increase in heart attacks due to increased barometric pressure. B) Increase in respiratory irritation due to increased levels of fine airborne particulates. C) Increase in skin cancer due to increased ozone levels. D) Increase in allergies due to increased household mold. Show Answer Correct Answer: B) Increase in respiratory irritation due to increased levels of fine airborne particulates. 12. -photosynthesis-production of carbonated drinks-Fire extinguisher-carbon cycle are examples of importance of ..... A) Inert gas. B) Nitrogen. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: C) Carbon dioxide. 13. An air mass is A) A large body of air with about the same temperature and humidity throughout. B) The amount of moisture in the air. C) A place where two different air masses meet. D) A cold air mass that bumps against a warm air mass. Show Answer Correct Answer: A) A large body of air with about the same temperature and humidity throughout. 14. Phosphorus combines with oxygen to form A) Phosphoric Acid. B) Phosphorus Pentoxide Gas. C) None of these. D) None of the above. Show Answer Correct Answer: B) Phosphorus Pentoxide Gas. 15. How can individuals contribute to reducing air pollution? A) Using energy-efficient appliances. B) Reducing the use of plastic. C) Conserving water. D) All of the above. Show Answer Correct Answer: D) All of the above. 16. How do differences in air pressure affect the movement of air? A) Air always moves from areas of low altitudes to high altitudes. B) Air always moves from areas of low pressure to areas of high pressure. C) Air always moves from east to west. D) Air always moves from areas of high pressure to areas of low pressure. Show Answer Correct Answer: D) Air always moves from areas of high pressure to areas of low pressure. 17. What can happen to fish when there is not enough oxygen in the water? A) They can suffocate. B) They can't float. C) They can't see. D) Nothing. Fish don't need oxygen. Show Answer Correct Answer: A) They can suffocate. 18. What kind of precipitation falls during a warm front? A) Long lasting rain. B) Thunderstorms and severe weather. C) Heavy precipitation. D) Steady rain. Show Answer Correct Answer: D) Steady rain. 19. Cold air mass and warm air mass meet and neither can move the other. A) Warm front. B) Cold front. C) Stationary front. D) Occluded front. Show Answer Correct Answer: C) Stationary front. 20. Radiation and subsidence inversions both may occur simultaneously, some times. Such a phenomenon is known as A) Reverse inversion. B) Double inversion. C) Plume raise. D) Super inversion. Show Answer Correct Answer: B) Double inversion. 21. Moving air is called what? A) Storm. B) Breeze. C) Wind. D) None of the above. Show Answer Correct Answer: C) Wind. 22. Can we see air? A) Yes, we can. B) No we cann't. C) All the above. D) None of the above. Show Answer Correct Answer: B) No we cann't. 23. What happened when we added cold water to the hot water? A) The water got hotter. B) The water stayed the same. C) The water got cooler. D) None of the above. Show Answer Correct Answer: C) The water got cooler. 24. Too much air pressure in the glove caused the glove to ..... A) Gauge. B) Force. C) Pop. D) Pressure. Show Answer Correct Answer: C) Pop. 25. When Sulphur dioxide combines with oxygen, then it turns into ..... A) Sulphur dioxide. B) Carbon monoxide. C) Sulphur Trioxide. D) None of the above. Show Answer Correct Answer: C) Sulphur Trioxide. ← 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