This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When two different air masses collide ..... A) A front forms. B) They casually become one. C) A new planet evolves. D) Dinosaurs become extinct. Show Answer Correct Answer: A) A front forms. 2. The ozone layer protects us from A) UV rays. B) CFCs. C) Increased atmospheric heat. D) Decreased atmospheric heat. Show Answer Correct Answer: A) UV rays. 3. The force that attracts a body toward the center of the earth A) Air resistance. B) Friction. C) Gravity. D) Force. Show Answer Correct Answer: C) Gravity. 4. Hydrogen Sulphide has a strong smell of ..... A) Rotten Eggs. B) Rotten Bread. C) Rotten Meat. D) None of the above. Show Answer Correct Answer: A) Rotten Eggs. 5. Ammonium salt is a specific form of ..... A) Carbon dioxide. B) Ozone. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 6. When and who discovered the hole in the hole in Ozone layer above Antarctica? A) Nasa, September 2007. B) Aura, November 2004. C) Nasa, September 2004. D) ISRO, August 2005. Show Answer Correct Answer: C) Nasa, September 2004. 7. Which of the following is true about the optimum effective temperature for human comfort? A) Same in winter and summer. B) Not dependent on season. C) Lower in winter than in summer. D) Higher in winter than in summer. Show Answer Correct Answer: C) Lower in winter than in summer. 8. Rain, snow sleet or hail are the different forms of: A) Condensation. B) Evaporation. C) Precipitation. D) All of these. Show Answer Correct Answer: C) Precipitation. 9. Air pollution happens when ..... A) The water gets dirty. B) The land gets dirty. C) The air gets dirty. D) None of the above. Show Answer Correct Answer: C) The air gets dirty. 10. To show the presence of carbon dioxide in air, pour ..... ml of ..... in a clean hard glass test tube A) 6, Water. B) 5, Water. C) 4, limewater. D) 7, Water. Show Answer Correct Answer: C) 4, limewater. 11. The components of air can be separated by physical means known as A) Fictional distillations. B) Liquified distillations. C) All the above. D) None of the above. Show Answer Correct Answer: A) Fictional distillations. 12. Air has taste. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. Air becomes thinner and thinner as we go higher and higher from the surface of earth. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. On which surface will a toy sled travel the least distance? A) Carpet. B) Polished wood. C) Ice. D) None of the above. Show Answer Correct Answer: A) Carpet. 15. 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. 16. ..... is the instrument used to measure air pressure. A) Barometer. B) Thermometer. C) Mercury. D) Watch. Show Answer Correct Answer: A) Barometer. 17. Air is always present around us? A) TRUE. B) FALSE. C) MAY BE. D) None of the above. Show Answer Correct Answer: A) TRUE. 18. Used on Industries/factory stacks to remove gases and particulate. A) Filters. B) Scrubbers/absorbents. C) Emission reducers. D) Filter Strips. Show Answer Correct Answer: B) Scrubbers/absorbents. 19. 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. 20. 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. 21. 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. 22. Which one is treated as BAD OZONE A) Stratospheric ozone. B) Mesospheric ozone. C) Tropospheric ozone. D) Atmospheric ozone. Show Answer Correct Answer: C) Tropospheric ozone. 23. What was the name of Shah Jaha's wife? A) Sita. B) Mumtaz Mahal. C) Mummy is expensive. D) Laxmi. Show Answer Correct Answer: B) Mumtaz Mahal. 24. 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. 25. TheirThereWearWhereAll have spelling A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. ← 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