This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Air Pollution is not destroying the ozone layer in the atmosphere. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 2. Self-cleansing properties of the temperature, clean and remove the air pollutants in the atmosphere, under various A) Artificial process. B) Natural process. C) Man made process. D) Chemical process. Show Answer Correct Answer: B) Natural process. 3. True/False? As air pressure decreases, so does air density. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. An air pollution prevention mechanism found in vehicles. A) Catalytic converter. B) Combustion chamber. C) Scrubber. D) Electrostatic precipitator. Show Answer Correct Answer: A) Catalytic converter. 5. How does fire help the balloon fly? A) Fire puts off gas that is cool enough to make it leave the ground. B) Fire heats the air. Since hot air is lighter than cold air, the balloon rises. C) Fire doesn't help the balloon fly. D) The balloon catches on fire and lifts it off the ground. Show Answer Correct Answer: B) Fire heats the air. Since hot air is lighter than cold air, the balloon rises. 6. Which gas in the air is needed for fires to burn? A) Carbon dioxide. B) Helium. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: C) Oxygen. 7. If the molecules in a substance are arranged in a tight, patterned kind of way, the matter must be in which state? A) Gas. B) Liquid. C) Evaporation. D) Solid. Show Answer Correct Answer: D) Solid. 8. GIVING OUT OF AIR IS CALLED A) INHALATION. B) BREATHING. C) EXHALATION. D) ALL OF THESE. Show Answer Correct Answer: C) EXHALATION. 9. Using buses, trains, or riding together reduces the number of ..... used. A) Cars. B) Smokestacks. C) Houses. D) None of the above. Show Answer Correct Answer: A) Cars. 10. Pressure is the effect of A) The weight of all the air above pressing down. B) Water vapor in the atmosphere. C) Greenhouse gases. D) Solar radiation. Show Answer Correct Answer: A) The weight of all the air above pressing down. 11. What does stationary mean? A) Not moving. B) Tropical. C) Moving fast. D) Polar. Show Answer Correct Answer: A) Not moving. 12. Planes that carry goods are called ..... A) Gliders. B) Position plans. C) All the above. D) None of the above. Show Answer Correct Answer: B) Position plans. 13. A-Hydrogen is required for burning.B-Aquatic organisms breathe oxygen dissolved in water. A) A-is correct, B-is false. B) A-is false, B-is true. C) Both A & B are true. D) Both A & B are false. Show Answer Correct Answer: B) A-is false, B-is true. 14. Which type of air mass is associated with warm, dry atmospheric conditions? A) CT. B) MT. C) CP. D) MP. Show Answer Correct Answer: A) CT. 15. The ..... has corroded the marbles of the monument. As a result, the Taj Mahal looks discolored. A) Rain. B) Oxygen. C) Acid Rain. D) Carbon dioxide. Show Answer Correct Answer: C) Acid Rain. 16. By compressing an air pump you ..... air from the pump to another container. A) Gauge. B) Pop. C) Transfer. D) Force. Show Answer Correct Answer: C) Transfer. 17. If an air mass is sinking, it must be A) Cold and less dense. B) Cold and more dense. C) Warm and more dense. D) Warm and less dense. Show Answer Correct Answer: B) Cold and more dense. 18. In a typical system, within whichcomponent would the evaporation of refrigerant take place? A) Receiver dryer. B) Condenser. C) Compressor. D) Evaporator. Show Answer Correct Answer: D) Evaporator. 19. Impure air is bad for A) Bed. B) Health. C) Pond. D) House. Show Answer Correct Answer: B) Health. 20. ..... emit smoke A) Trees. B) Factories. C) Water. D) None of the above. Show Answer Correct Answer: B) Factories. 21. Air, water, and soil are affected by ..... A) Pollution. B) Water falls. C) Rain. D) None of the above. Show Answer Correct Answer: A) Pollution. 22. Why is the ozone layer vital to life on Earth? A) It shields the Earth from ultraviolet (UV) rays from the sun. B) It causes clouds to be created. C) It is made up of oxygen (O$_{2}$). D) Planes fly in the ozone layer. Show Answer Correct Answer: A) It shields the Earth from ultraviolet (UV) rays from the sun. 23. What is produced when combustable substance is in the vapour state and burn strongly in the presence of of air? A) Light. B) Flame. C) Heat. D) Fumes. Show Answer Correct Answer: B) Flame. 24. Which layer helps transmit radio transmissions? A) Lonosphere. B) Radiosphere. C) Ozone layer. D) ThermosphereTagslayers of atmosphere. Show Answer Correct Answer: D) ThermosphereTagslayers of atmosphere. 25. The air particles inside the jar collide more. A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 26. Does air have weight A) No. B) Yes. C) Both. D) None of the above. Show Answer Correct Answer: B) Yes. 27. In what direction(s) does air exert pressure? A) There is no pressure. B) Downward. C) No where. D) Everywhere. Show Answer Correct Answer: D) Everywhere. 28. Even an empty bottle is filled with ..... A) Air. B) Space. C) Nothing. D) Invisible water. Show Answer Correct Answer: A) Air. 29. The layer of atmosphere in which space shuttles orbit is called ..... A) Thermosphere. B) Exosphere. C) Stratosphere. D) Troposphere. Show Answer Correct Answer: A) Thermosphere. 30. Which of these is a greenhouse gas A) Helium. B) Carbon monoxide. C) Carbon dioxide. D) Sulfer. Show Answer Correct Answer: C) Carbon dioxide. 31. If air has been ..... a lot of it will have a higher air pressure. A) Decompressed. B) Compressed. C) All the above. D) None of the above. Show Answer Correct Answer: B) Compressed. 32. Which of these is an effect of air pollution? A) Respiratory problems. B) Increased disease for humans. C) Reduced food sources for humans. D) Decrease in global temperatures. Show Answer Correct Answer: A) Respiratory problems. 33. Which of the following provides the relationship between the optimum indoor effective temperature and optimum outdoor effective temperature? A) Clothing. B) Occupants. C) Duration of stay. D) Climatic and seasonal differences. Show Answer Correct Answer: D) Climatic and seasonal differences. 34. What instrument do you use to measure relative humidity? A) Wind mill. B) Barometer. C) Weather vane. D) Psychometer. Show Answer Correct Answer: D) Psychometer. 35. Pick the word that matches the definition:is the frictional force air exerts against a moving object. A) Air Resistance. B) Gravity. C) Friction. D) Force. Show Answer Correct Answer: A) Air Resistance. 36. When harmful substances build up in the air to unhealthy levels it is known as ..... A) Water pollution. B) Air pollution. C) Unfortunate. D) Chemicalization. Show Answer Correct Answer: B) Air pollution. 37. A light, gentle wind is generally called a ..... A) Wind. B) Storm. C) Breeze. D) Tornado. Show Answer Correct Answer: C) Breeze. 38. Tornadoes occur when a very cold, dry air mass meets a very warm, wet air mass. Which two air masses would most likely form a tornado when they meet? A) CP and cA. B) CT and mP. C) CP and mT. D) MP and mT. Show Answer Correct Answer: C) CP and mT. 39. As jet streams get closer to the equator they ..... A) Pick up energy. B) Dissolve. C) Blow faster. D) Blow slower. Show Answer Correct Answer: D) Blow slower. 40. Passenger flights are used for transporting ..... A) Goods. B) People. C) All the above. D) None of the above. Show Answer Correct Answer: B) People. 41. Which sentence from the selection states an opinion? A) Technically speaking, Air Force One isn't the name of a specific airplane. B) Richard Nixon flew aboard the same plane on his historic visits abroad. C) Ronald Reagan, though easy to get along with, was also somewhat of a loner. D) The president's plane is loaded with state-of-the-art navigation and communications equipment. Show Answer Correct Answer: C) Ronald Reagan, though easy to get along with, was also somewhat of a loner. 42. Over which of the following components of smog do humans have the LEAST control? A) Water Vapor. B) Sulfur Dioxide. C) Ammonia. D) Nitrogen oxides. Show Answer Correct Answer: A) Water Vapor. 43. What was the effect of the Montgolfier experiment? A) The first hot air balloon. B) The first kite. C) The first drawing. D) The first silk pillow. Show Answer Correct Answer: A) The first hot air balloon. 44. A phenomenon in the atmosphere, when the reverse or negative lapse rate occurs, in which a dense cold stratum of the air at ground level gets covered by a lighter warmer air at higher level is known as A) Adiabatic lapse rate. B) Inversion. C) Environmental Lapse rate. D) Stable. Show Answer Correct Answer: B) Inversion. 45. How much forest is lost every minute? A) 20 football fields. B) 20 feet. C) 20 centimenters. D) 20 inches. Show Answer Correct Answer: A) 20 football fields. 46. In soft drinks ..... is filled with pressure A) Water. B) Air. C) Sugar. D) None of the above. Show Answer Correct Answer: B) Air. 47. Air helps to ..... clothes. A) Wet. B) Dry. C) All the above. D) None of the above. Show Answer Correct Answer: B) Dry. 48. What causes air pollution? A) Factories produce too much waste water and oil. B) Factories produce too much smoke. C) All the above. D) None of the above. Show Answer Correct Answer: B) Factories produce too much smoke. 49. What is the standard unit of temperature A) Fahrenheit. B) Celsius. C) Kelvin. D) None of the above. Show Answer Correct Answer: B) Celsius. 50. We board the aeroplane at the ..... A) Railway station. B) Airport. C) All the above. D) None of the above. Show Answer Correct Answer: B) Airport. 51. Trees take ..... gas from surrounding A) Oxygen. B) Carbon dioxide. C) All the above. D) None of the above. Show Answer Correct Answer: B) Carbon dioxide. 52. The ozone hole in the upper atmosphere results primarily from A) Automobile exhaust. B) Carbon dioxide pollution. C) CFC pollution. D) All of the above. Show Answer Correct Answer: C) CFC pollution. 53. The aeroplane will ..... at 5pm. You should be at the airport an hour early. A) Shoot off. B) Move out. C) Take off. D) Fly away. Show Answer Correct Answer: C) Take off. 54. What is the percentage of Nitrogen A) 0.03%. B) 0.04%. C) 78%. D) 21%. Show Answer Correct Answer: C) 78%. 55. Warm air molecules move A) Faster. B) Slower. C) All the above. D) None of the above. Show Answer Correct Answer: A) Faster. 56. What type of weather does a high pressure system bring? A) Dry weather. B) Clouds. C) Stormy weather. D) Lower temperatures. Show Answer Correct Answer: A) Dry weather. 57. An instrument tha measures air pressure without using a liquid. A) Aneroid barometer. B) Aneroid gauge. C) Mercury barometer. D) Mercury thermometer. Show Answer Correct Answer: A) Aneroid barometer. 58. Which of the following environmental problems is most often linked to the combustion of fossil fuels? A) Photochemical smog formation in the troposphere. B) Cultural eutrophication in surface waters. C) Thermal inversions in mountainous coastal areas. D) Ozone thinning in the stratosphere. Show Answer Correct Answer: A) Photochemical smog formation in the troposphere. 59. Which of the statement is true? A) Warm air is lighter than cold air. B) Cold air is lighter than warm air. C) Both are of same density. D) None. Show Answer Correct Answer: A) Warm air is lighter than cold air. 60. What do you mean by insolation? A) Outgoing rays. B) Insulators rays. C) Incoming solar energy. D) None of these. Show Answer Correct Answer: C) Incoming solar energy. ← PreviousNext →Related QuizzesGeography QuizzesClass 7 QuizzesClass 7 Geography Chapter 4 Air Quiz 1Class 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books