This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 39 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 39 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are some ways to stop air pollution? A) If possible use fan instead of A.C. B) Walk if we are traveling a short distance. C) Avoid cracker during Diwali. D) All of the above. Show Answer Correct Answer: D) All of the above. 2. Which of the following is the second major gas that makes up the atmosphere, about 21%? A) Nitrogen. B) Oxygen. C) Carbon Dioxide. D) Carbon Monoxide. Show Answer Correct Answer: B) Oxygen. 3. The earth recieves ..... of the insolation at the upper atmosphere. A) 230, 000 maintained. B) 1, 000, 000 maintained. C) 759, 000 maintained. D) 174, 000 maintained. Show Answer Correct Answer: D) 174, 000 maintained. 4. True or False:Air has weight. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. Combustion is when a ..... reacts with oxygen A) Petrol. B) Fuel. C) Fire triangle. D) Carbon dioxide. Show Answer Correct Answer: B) Fuel. 6. Who named oxygen? A) C.W.Scheele. B) Daniel Rutherford. C) Newton. D) Lavoisier. Show Answer Correct Answer: D) Lavoisier. 7. If an air mass forms over an ocean it will be A) Wet. B) Dry. C) Cold. D) Warm. Show Answer Correct Answer: A) Wet. 8. What are the conditions on the moon? A) The moon has no air and no gravity as compared to Earth. B) The moon has air and weaker gravity as compared to Earth. C) The moon has no air and weaker gravity as compared to Earth. D) The moon has no air and stronger gravity as compared to Earth. Show Answer Correct Answer: C) The moon has no air and weaker gravity as compared to Earth. 9. Wet hair get dry in Sun because ..... A) Water turns into steam and goes in the sun. B) Steam turns into water. C) Steam turns into ice. D) Water turns into steam and goes in the air. Show Answer Correct Answer: D) Water turns into steam and goes in the air. 10. What helps the flight move faster? A) Shape and size. B) Colour and size. C) All the above. D) None of the above. Show Answer Correct Answer: A) Shape and size. 11. What are properties of air? A) It fills space. B) It has no weight. C) It has colour. D) There is no air on earth. Show Answer Correct Answer: A) It fills space. 12. Increase in which gas is primarily responsible for increased global warming? A) Carbon dioxide. B) Water vapor. C) Methane. D) Nitric oxides. Show Answer Correct Answer: A) Carbon dioxide. 13. What type of air mass is cold, forms over the poles, and has high air pressure? A) Tropical. B) Polar. C) Maritime. D) Continental. Show Answer Correct Answer: B) Polar. 14. Cool air molecules take up A) More space. B) Less space. C) All the above. D) None of the above. Show Answer Correct Answer: B) Less space. 15. Which of the following is present in automobile exhaust? A) Mercury Oxide. B) Hydrogen Sulphide. C) Lead Oxide. D) All of the above. Show Answer Correct Answer: C) Lead Oxide. 16. Which gas is released in combustion? A) Oxygen. B) Nitrogen. C) Carbon monoxide. D) Carbon Dioxide. Show Answer Correct Answer: D) Carbon Dioxide. 17. Which weather condition will most likely occur when the atmospheric pressure in an area begins falling? A) Dry. B) Cold. C) Rainy. D) Sunny. Show Answer Correct Answer: C) Rainy. 18. Which kind of air should we breathe? A) Dirty. B) Clean. C) Dusty. D) None of the above. Show Answer Correct Answer: B) Clean. 19. Air moves toward the center of a ..... pressure system. A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low. 20. Additional or extra increase in the average temperature of earth is called ..... A) Acid rain. B) Global warming. C) Photosynthesis. D) None of these. Show Answer Correct Answer: B) Global warming. 21. Explain the process of formation of warm fronts. A) Warm fronts form when there is no movement of air. B) Warm fronts form when the temperature remains constant in an area. C) Warm fronts form when cold air moves into an area of warm air. D) Warm fronts form when warm air moves into an area of cooler air. Show Answer Correct Answer: D) Warm fronts form when warm air moves into an area of cooler air. 22. How many states of matter are there? A) 7. B) 5. C) 3. D) None of the above. Show Answer Correct Answer: C) 3. 23. The gas which get reduced, through the process of photosynthesis, is ..... A) Sulphur oxide. B) Nitrogen oxide. C) Ozone. D) Carbon dioxide. Show Answer Correct Answer: D) Carbon dioxide. 24. As you go up a mountain air pressure ..... A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: B) Decreases. 25. Expanding of balloon shows air ..... A) Supports burning. B) Has weight. C) Occupies space. D) None of the above. Show Answer Correct Answer: C) Occupies space. ← 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