This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Geography Chapter 4 Air – Quiz 36 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 36 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Air contains 1% of ..... , 20.9% of ..... , and 78, 3% of ..... A) Nitrogen, Oxygen, Noble gases. B) Noble Gases, Oxygen, Nitrogen. C) Nitrogen, Noble gases, Oxygen. D) Noble Gases, Oxygen, Nitrogen. Show Answer Correct Answer: B) Noble Gases, Oxygen, Nitrogen. 2. The Giving out of air is called. A) Exhalation. B) Inhalation. C) Breathing. D) None of the above. Show Answer Correct Answer: A) Exhalation. 3. Which type of weather is most often produced by a low air pressure system? A) Cold. B) Hot. C) Rainy. D) Sunny. Show Answer Correct Answer: C) Rainy. 4. If you pick up two cans of air, one full and one almost empty, the one that is full is heavier because ..... A) Warm air expands. B) Air is a mixture of gases. C) Air has weight. D) Cool air contracts. Show Answer Correct Answer: C) Air has weight. 5. What types of air masses form over oceans? A) Maritime. B) Continental. C) Polar. D) Tropical. Show Answer Correct Answer: A) Maritime. 6. How do you get in the plane? A) Window. B) Engine. C) Cabin Entry door. D) None of the above. Show Answer Correct Answer: C) Cabin Entry door. 7. A(n) ..... is the boundary where two air masses meet. A) Air mass. B) Storm. C) Collision. D) Front. Show Answer Correct Answer: D) Front. 8. What happens when air becomes light? A) It settles down. B) It remains where it is. C) It starts rising. D) It moves in any direction. Show Answer Correct Answer: C) It starts rising. 9. Air pollution has nearly econmic cost A) 3 trillion $. B) 300, 000$. C) 3 million $. D) 3 billion $. Show Answer Correct Answer: A) 3 trillion $. 10. Cold air mass overtakes a warm air mass and moves below the warm air mass. A) Warm front. B) Cold front. C) Occluded front. D) Stationary front. Show Answer Correct Answer: B) Cold front. 11. ..... is the gaseous state of water. A) Rain. B) Snow. C) Water vapour. D) Wind. Show Answer Correct Answer: C) Water vapour. 12. What is the BEST definition of air? A) It is around us. B) A mixture of many gases. C) Oxygen. D) We need it. Show Answer Correct Answer: B) A mixture of many gases. 13. What is the suitable method to separate air components? A) Chromatography. B) Fractional distillation. C) Using magnet. D) None of the above. Show Answer Correct Answer: B) Fractional distillation. 14. What are the four nations in the world of the avatar? A) Water, air, moon, sky. B) Fire, air, water, earth. C) Rock, wind, sun, moon. D) Oxygen, hydrogen, carbon, iodine. Show Answer Correct Answer: B) Fire, air, water, earth. 15. Who was the husband of Mumtaz Maham? A) Lord Ram. B) Shaha Jaaha. C) Holly. D) You, yourself. Show Answer Correct Answer: B) Shaha Jaaha. 16. For measuring how acidic or basic something is, the ..... scale is used A) PH. B) Litmus. C) Richter. D) Acid/base. Show Answer Correct Answer: A) PH. 17. Which of the following illustrates the reactants needed to form tropospheric ozone? A) Bad+his right. B) O2+C6H12O6. C) NO2+VOCs+O2+sunlight. D) CO2+H2O+sunlight. Show Answer Correct Answer: C) NO2+VOCs+O2+sunlight. 18. The Particles of gases are ..... packed. A) Tightly. B) Loosely. C) Very loosely. D) None of the above. Show Answer Correct Answer: C) Very loosely. 19. What type of weather does a low pressure system bring? A) High temperatures. B) Clear skies. C) Strong Winds. D) Dry weather. Show Answer Correct Answer: C) Strong Winds. 20. The air particles in the jar become smaller. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. How could you confirm the type ofrefrigerant present in an air conditioning system? A) The odour the refrigerant emitswhen released to atmosphere. B) The colour of the refrigerant whichis visible through the sight glass in the top of the receiver drier. C) Bychecking the identifier label located on the vehicle. D) It does not matter as R12 and R134aare interchangeable. Show Answer Correct Answer: C) Bychecking the identifier label located on the vehicle. 22. Which of these gases makes up the largest proportion of the Earth's atmosphere today? A) Oxygen. B) CO$_{2}$. C) SO$_{2}$. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 23. Which of these is a MAJOR cause of acid rain? A) Spraying pesticides on crops. B) Burning fossil fuels for energy. C) Dumping sewage in river systems. D) Using uranium to generate electricity. Show Answer Correct Answer: B) Burning fossil fuels for energy. 24. The plane ..... late due to bad weather. A) Filled out. B) Checked in. C) Took off. D) Picked up. Show Answer Correct Answer: C) Took off. 25. Moist air has ..... pressure than dry air. A) More. B) Less. C) All the above. D) None of the above. Show Answer Correct Answer: B) Less. ← 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