This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 47 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What causes the dirty air? A) Smoke from factories. B) Birds. C) Trees. D) None of the above. Show Answer Correct Answer: A) Smoke from factories. 2. Plants require ..... from the air for photosynthesis. A) Oxygen. B) Carbon dioxide. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 3. Taking in air is called ..... And taking out air is called ..... A) A) inalatioon b) exlaion. B) A) inhalation b) exlation. C) A) inhalation b) exhalation. D) None of the above. Show Answer Correct Answer: C) A) inhalation b) exhalation. 4. How are soot and dust bad for health? A) No, soot and dust are good for health. B) Soot and dust are solid particle. The enter our respiratory tract and lungs along with the air we inhale.And they may cause many respiratory problems. C) Soot and dust are solid particle. The enter our circulatory tract and lungs along with the air we inhale.And they may cause many respiratory problems. D) None of the above. Show Answer Correct Answer: B) Soot and dust are solid particle. The enter our respiratory tract and lungs along with the air we inhale.And they may cause many respiratory problems. 5. The ..... are hinged on the wings and move downward to push the air down and make the wing tilt up. A) Flaps. B) Fuselage. C) Ailerons. D) None of the above. Show Answer Correct Answer: C) Ailerons. 6. A strong wind is called A) Breeze. B) Blow. C) Storm. D) None of the above. Show Answer Correct Answer: C) Storm. 7. Tiredness felt by a person after a long flight across several time zones is called ..... A) Airplane ear. B) Overbooking of seats. C) Jet lay. D) A long queue at the check-in counter. Show Answer Correct Answer: C) Jet lay. 8. What can we do to reduce air pollution? A) Create wildfires. B) Use less energy, walk and ride bikes. C) Eat more meat to absorb toxins. D) Buy plants. Show Answer Correct Answer: B) Use less energy, walk and ride bikes. 9. What effect of air pollution causes millions of people to die each year? A) Stroke. B) Heart attack. C) Heart disease. D) All of the above. Show Answer Correct Answer: D) All of the above. 10. The wheels of a plane are called the A) Landing gear. B) Wheels. C) Fuselage. D) None of the above. Show Answer Correct Answer: A) Landing gear. 11. All living things need air. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Before you board the plane you go through a designated ..... A) Gate. B) Door. C) Hook. D) Path. Show Answer Correct Answer: A) Gate. 13. Fewer molecules further apart, means density is: A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low. 14. ..... fronts bring on steady (or light) rain or snow that may last for a few days A) Warm. B) Cold. C) All the above. D) None of the above. Show Answer Correct Answer: A) Warm. 15. What helps the wet clothes to get dry? A) Air. B) Rain. C) Snowfall. D) None of the above. Show Answer Correct Answer: A) Air. 16. When we sneeze we must cover our mouth with a ..... A) Saree. B) Hanky. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hanky. 17. Combustion is a A) Natural process. B) Chemical process. C) Physical process. D) None of these processes. Show Answer Correct Answer: B) Chemical process. 18. Insects breathe with the help of ..... A) Lungs. B) Gills. C) Spiracles. D) None of the above. Show Answer Correct Answer: C) Spiracles. 19. What makes objects fall to the earth A) Gravity. B) Wind. C) Force. D) Air Pressure. Show Answer Correct Answer: A) Gravity. 20. The following ailments are long-term effects of air pollution EXCEPT A) Emphysema. (hardening of lungs). B) Lung cancer. C) Headaches. D) Heart disease. Show Answer Correct Answer: C) Headaches. 21. Which of the following pH measurements of rainwater would indicate acid precipitation/rain? A) PH 6.0. B) PH 4.1. C) PH 7.3. D) PH 9.6. Show Answer Correct Answer: B) PH 4.1. 22. Where is air pressure the greatest? A) At Earth's surface. B) On a mountain. C) In an airplane. D) Outer space. Show Answer Correct Answer: A) At Earth's surface. 23. A cP air mass is a A) Arctic Continental. B) Polar Maritime. C) Polar Continental. D) Tropical Continental. Show Answer Correct Answer: C) Polar Continental. 24. Look at the picture under paragraph 4 from the selection.This picture helps the reader understand- A) How air in a balloon is heavier than a balloon without air in it. B) The myth that air has weight is solved. C) Where to find balloons. D) The chairs are not the same size. Show Answer Correct Answer: A) How air in a balloon is heavier than a balloon without air in it. 25. Which is called dry ice A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) Magnesium. Show Answer Correct Answer: A) Carbon dioxide. ← 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