This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 14 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Cold air (RISES/ FALLS) ..... A) RISES. B) FALLS. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALLS. 2. We can not see or touch air but it is always around us. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Why is nitrogen used for flushing food packets A) To reduce combustion. B) To reduce bacterial growth. C) None of above. D) None of the above. Show Answer Correct Answer: A) To reduce combustion. 4. Which of the following would most likely neutralize the effect of acid rain on bodies of water, based on the composition of soils and bedrock in the region? A) An open plain underlain by granite. B) A forest underlain by limestone. C) A valley that is frequently shrouded in fog. D) An area downwind of a coal-burning electrical plant. Show Answer Correct Answer: B) A forest underlain by limestone. 5. What is the most likely reason the author begins the selection with the ideas inparagraph 1? A) To describe an activity that the reader may not have experienced. B) To suggest the idea of an activity. C) To introduce the topic or main idea of the selection. D) All of these. Show Answer Correct Answer: D) All of these. 6. Which of the following is NOT an effect of air pollution? A) Respiratory and Heart Problems. B) Child Health Problems. C) Global Warming. D) Acid Rain. E) Deforestation. Show Answer Correct Answer: E) Deforestation. 7. The weather characteristics of air mass result primarily from its A) Geographic origin. B) Size and shape. C) Rate of movement. D) Direction of movement. Show Answer Correct Answer: A) Geographic origin. 8. Tiny living organisms that cause diseases ..... A) Ants. B) Earthworms. C) Germs. D) None of the above. Show Answer Correct Answer: C) Germs. 9. The gas, whose amount varies with weather changes, is ..... A) Helium. B) Nitrogen. C) Water vapour. D) Oxygen. Show Answer Correct Answer: C) Water vapour. 10. Air is a ..... resource A) Natural. B) Artificial. C) All the above. D) None of the above. Show Answer Correct Answer: A) Natural. 11. A strong wind with rain and thunder is ..... A) Storm. B) Gale. C) Breeze. D) None of the above. Show Answer Correct Answer: A) Storm. 12. If an air mass formed over land, and is mostly dry, which descriptor will likely be part of its name? A) Continental. B) Arctic. C) Maritime. D) Tropical. Show Answer Correct Answer: A) Continental. 13. ..... is the mass of air surrounding the Earth. A) Earth. B) Atom. C) Atmosphere. D) Universe. Show Answer Correct Answer: C) Atmosphere. 14. Example of local wind blowing in summer in north India. A) To. B) Breeze. C) Air. D) None of the above. Show Answer Correct Answer: A) To. 15. Which of the following doesn't increase air pollution ..... A) Smoke from forest fire. B) Constructing large chimneys. C) Germs from coughing and sneezing. D) Stone dust raised by crushing of stones in quarries. Show Answer Correct Answer: B) Constructing large chimneys. 16. How would you know the air con gas hasbeen fully recovered from the system? A) The gauge on the high pressure sidereads a positive pressure. B) The gauge on the low pressure sidereads a negative pressure. C) Bothgauges read zero pressure at the end of the recovery process. D) Both gauges read a positivepressure of 20 Bar at the end of the recovery process. Show Answer Correct Answer: C) Bothgauges read zero pressure at the end of the recovery process. 17. Rapidly moving cold air mass runs into a warm air mass the cold air slides under the warm air. This is called a ..... A) Cold front. B) Warm front. C) Stationary front. D) None of the above. Show Answer Correct Answer: A) Cold front. 18. Air pollution is caused by ..... and ..... A) Natural. B) Human-made. C) Both (a) and (b). D) None of the above. Show Answer Correct Answer: C) Both (a) and (b). 19. The part of air which all living things need to breathe in is ..... A) Hydrogen. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 20. Wich is the purest form of water? A) Evaporated water. B) Distilled water. C) Filtered water. D) Condensed water. Show Answer Correct Answer: B) Distilled water. 21. Which one of the following gases is present in the atmosphere in the highest amount? A) Oxygen. B) Lithium. C) Carbon dioxide. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 22. How to test the presence of Oxygen? A) Use glowing wooden splinter. B) Use lime water. C) Use burning wooden splinter. D) Use litmus paper. Show Answer Correct Answer: A) Use glowing wooden splinter. 23. The rougher the surface, the faster an object will travel over the surface. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. Why is the temperature colder as you move farther away from the equator? A) The sun hits the earth most directly at the equator because of the Earth's shape and transfers more energy. B) The moon is closest to the north and south poles. C) The equator is where the two hemispheres meet. D) The Earth is more narrow at the poles and loses energy faster. Show Answer Correct Answer: A) The sun hits the earth most directly at the equator because of the Earth's shape and transfers more energy. 25. What is swirling air called A) Lightening. B) Cyclone. C) Wind. D) Thunderstorm. Show Answer Correct Answer: B) Cyclone. 26. Air helps ..... to fly. A) Rocks. B) Kites. C) All the above. D) None of the above. Show Answer Correct Answer: B) Kites. 27. ..... from air is used for breathing and burning. A) Carbon dioxide. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: B) Oxygen. 28. Lines on a weather map that connect areas of equal pressure. A) Warm front. B) Isobar. C) Intermediate. D) Barometer. E) Cold front. Show Answer Correct Answer: B) Isobar. 29. Which is not combustible substance A) Cow dung cake. B) Paper. C) Wood. D) Stone. Show Answer Correct Answer: D) Stone. 30. Creates heavy downpours, thunderstorms, and sometimes violent weather A) Warm front. B) Occluded front. C) Stationary front. D) Cold front. Show Answer Correct Answer: D) Cold front. 31. Many new aircraft are built of composite materials. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 32. Which of the following is the most dangerous? A) Carbon dioxide. B) Carbon Monoxide. C) Nitrogen. D) Dust. Show Answer Correct Answer: B) Carbon Monoxide. 33. Air can fill the space. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 34. What characteristics are used to classify air masses? A) Temperature and humidity. B) Pressure and temperature. C) Latitude and longitude. D) Wind speed and location. Show Answer Correct Answer: A) Temperature and humidity. 35. Which gas is used as a rocket fuel? A) Hydrogen. B) Carbon dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 36. Windmills need wind to work. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 37. How much % of nitrogen are there in earth A) 0.04%. B) 21%. C) 78%. D) 00.3%. Show Answer Correct Answer: C) 78%. 38. Air with a lot of built up pressure can move things with a strong ..... A) Pumps. B) Directions. C) Gauge. D) Force. Show Answer Correct Answer: D) Force. 39. True or False:Some Tuskegee Airmen went on to have long careers in the military. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 40. The Greek word azote means ..... A) Earth. B) Acid producer. C) No life. D) Venom. Show Answer Correct Answer: C) No life. 41. Which best describes an air mass? A) A large body of air that has no water vapor. B) A large body of air that has the same temperature but different amounts of water vapor. C) A large body of air that has the same amount of water vapor but different temperatures. D) A large body of air that has the same amount of water vapor and temperature. Show Answer Correct Answer: D) A large body of air that has the same amount of water vapor and temperature. 42. Humans and animals need ..... to breathe. A) Carbon dioxide. B) Oxygen. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Oxygen. 43. Gas that makes up 21% of air A) Oxygen. B) Nitrogen. C) Argon. D) None of the above. Show Answer Correct Answer: A) Oxygen. 44. The wind blowing around is actually ..... moving from one place to another. A) Air. B) Pressure. C) Force. D) Mars. Show Answer Correct Answer: A) Air. 45. ..... pressure systems are characterized by cloudy, rainy weather. A) High. B) Low. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low. 46. Plants respire through tiny pores on the surface of the leaves called- A) Stomata. B) Tiny pores. C) Respiration. D) None of the above. Show Answer Correct Answer: A) Stomata. 47. You are on top of a very high mountain. You set up the air-pressure indicator system as you did in the classroom. What do you expect will happen when you squeeze the jar? A) The water will go down the straw, but not as much. B) The water will go up the straw. C) The system will act exactly the same way as it did at a lower elevation. D) The water will go down the straw even more. Show Answer Correct Answer: C) The system will act exactly the same way as it did at a lower elevation. 48. When a warm front is approaching, what happens? A) Advancing cold air pushes up and over retreating warm air causing warm temperatures and mild rain. B) Advancing warm air pushes up and over retreating cold air causing warm temperatures and mild rain. C) All the above. D) None of the above. Show Answer Correct Answer: B) Advancing warm air pushes up and over retreating cold air causing warm temperatures and mild rain. 49. What do you call a soft wind? A) Storm. B) Breeze. C) Wind. D) None of the above. Show Answer Correct Answer: B) Breeze. 50. How to test the presence of Hydrogen? A) Use glowing wooden splinter. B) Use burning wooden splinter. C) Use litmus paper. D) Use Limawater. Show Answer Correct Answer: B) Use burning wooden splinter. 51. The process through which the water droplets are formed is called the A) Evaporation. B) Absorption. C) Transition. D) Both A and C. Show Answer Correct Answer: D) Both A and C. 52. What fee do you have to pay if your suitcase is too heavy? A) Extra weight luggage. B) Excess baggage. C) Overweight luggage. D) Exceeded baggage. Show Answer Correct Answer: B) Excess baggage. 53. We breathe in ..... A) Argon. B) Ammonia. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 54. Air is not colourless and odourless. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 55. ..... is air that flows from areas of high pressure to areas of low pressure. A) Convection Cells. B) Wind. C) Atmospheric Pressure. D) None of the above. Show Answer Correct Answer: B) Wind. 56. Particulates can be removed from smokestack emissions by which of the following methods? A) Electrostatic precipitators. B) Irradiation by UV light. C) Exhaust-stream aeration. D) Catalytic converters. Show Answer Correct Answer: A) Electrostatic precipitators. 57. True or false. Acid rain can become a problem in different countries through transboundary pollution. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 58. Air pressure is highest at what level?A-1016B-1012C-1012D-988 A) Location C. B) Location B. C) Location D. D) Location A. Show Answer Correct Answer: D) Location A. 59. Based on it movement what do air is classified? A) Wind. B) Breeze. C) Gale. D) Storm. E) All. Show Answer Correct Answer: E) All. 60. The movement in the air caused by differences in air pressure is called? A) Rain. B) Wind. C) Air. D) None of the above. Show Answer Correct Answer: B) Wind. ← PreviousNext →Related QuizzesGeography QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books