This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Geography > Air > Class 7 Geography Chapter 4 Air – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Geography Chapter 4 Air Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The United States contains ..... different types of air masses. A) 2. B) 4. C) 5. D) 3. Show Answer Correct Answer: B) 4. 2. When precipitation comes down to the earthin the liquid form, it is called as ..... A) Rain. B) Snow. C) Fog. D) Cloud. Show Answer Correct Answer: A) Rain. 3. We use ..... for breathing. A) Nitrogen. B) Oxygen. C) Carbon. D) None of the above. Show Answer Correct Answer: B) Oxygen. 4. What is full form of UV rays A) Ultra Verse rays. B) Ultra Violent rays. C) Universe see themselves. D) Ultra violet rays. E) None. Show Answer Correct Answer: D) Ultra violet rays. 5. What is a boundary area where air masses meet but do not mix? A) High pressure system. B) Low pressure system. C) Front. D) Super cell. Show Answer Correct Answer: C) Front. 6. Stratosphere contains a layer of which gas? A) Nitrogen. B) Oxygen. C) Carbon. D) Ozone. Show Answer Correct Answer: D) Ozone. 7. When it is sunny, we need to wear ..... A) Raincoat. B) Sunglasses. C) Boots. D) None of the above. Show Answer Correct Answer: B) Sunglasses. 8. Orographic rainfall is also known as A) Ramp rainfall. B) Relief Rainfall. C) Frontal Rainfall. D) None of these. Show Answer Correct Answer: B) Relief Rainfall. 9. In what layer of the atmosphere do all weather events occur? A) Stratosphere. B) Troposphere. C) Exosphere. D) Mesosphere. Show Answer Correct Answer: B) Troposphere. 10. What is the Earth's atmosphere? A) A layer of air surrounding the Earth. B) A type of fossil fuel. C) Water Pollution. D) Air pollution. Show Answer Correct Answer: A) A layer of air surrounding the Earth. 11. Water vapour is a ..... A) Gas. B) Liquid. C) Solid. D) None oif the above. Show Answer Correct Answer: A) Gas. 12. The Polar region experiences extremely High pressure. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. Of the following, which is true of noise pollution? A) Sudden or persistent noise may lead to permanent hearing loss. B) Noise pollution is an insignificant occupational hazard. C) In urban areas, few individuals are exposed to noise pollution. D) Noise at 100 decibels has twice the energy of noise at 50 decibels. Show Answer Correct Answer: A) Sudden or persistent noise may lead to permanent hearing loss. 14. When a falling object stops accelerating and falls at a constant speed, it is A) Terminal velocity. B) Acceleration. C) Constant velocity. D) Fluency. Show Answer Correct Answer: A) Terminal velocity. 15. When surface area is less ..... A) Air resistance decreases. B) The force of gravity decreases. C) The force of gravity increases. D) Air resistance increases. Show Answer Correct Answer: A) Air resistance decreases. 16. Another word of poisonous is? A) Pollution. B) Chemical. C) Toxic. D) Toxicology. Show Answer Correct Answer: C) Toxic. 17. Which words in paragraph 3, in the section titled "What I Should Do" , best help the reader understand the meaning of handled? A) Drill a small hole. B) Exactly one inch. C) Through the center hole. D) With care. Show Answer Correct Answer: D) With care. 18. A ..... goes round and round when the wind blows. A) Kite. B) Windmill. C) Bike. D) None of the above. Show Answer Correct Answer: B) Windmill. 19. Name one log term pollution diesease A) Bronchitis. B) Pneumonia. C) Headace. D) Asthma. Show Answer Correct Answer: D) Asthma. 20. How many types of gases are there in air? A) 0. B) 2. C) 10. D) 1, 020. Show Answer Correct Answer: C) 10. 21. Aliyah observes the air pressure daily. Over the last couple of days the air pressure has been increasing. What weather will Aliyah most likely observe as a result? A) Increasingly clear skies and dry weather. B) Increasingly clear skies and more wind. C) Increasingly cloudy skies and dry weather. D) None of the above. Show Answer Correct Answer: A) Increasingly clear skies and dry weather. 22. The Clean Air act includes for all of the following EXCEPT: A) Set air quality standards for public health. B) Signed by 71 nations in Montreal. C) Point source emissions standards for all new facilities. D) Developed motor vehicles emission standards. Show Answer Correct Answer: B) Signed by 71 nations in Montreal. 23. Who helps to keep the air clean? A) Birds. B) Trees. C) None of them. D) None of the above. Show Answer Correct Answer: B) Trees. 24. Which kind of weather change will occur with an increase in air pressure? A) Cooler and dryer. B) Colder and rainier. C) Hotter and stormier. D) Warmer and moister. Show Answer Correct Answer: A) Cooler and dryer. 25. What does a TXV do? A) Cleans, dries and filters the refrigerant. B) It controls the quantity ofrefrigerant entering the evaporator. C) Allows for an increase in pressure andtemperature prior to entering the condenser. D) It acts as a safety device if thecompressor is over pressuring the system. Show Answer Correct Answer: B) It controls the quantity ofrefrigerant entering the evaporator. 26. The ..... changes the water in the rivers into water vapour. A) Sun. B) Moon. C) Stars. D) All of the above. Show Answer Correct Answer: A) Sun. 27. If an air mass forms above land, it will be A) Dry. B) Wet. C) Cold. D) Hot. Show Answer Correct Answer: A) Dry. 28. Air helps move things. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 29. Where can you leave your luggage at the station if you do not want to carry it with you all day? At ..... A) Luggage store. B) Left luggage. C) Leave-and-go. D) Bag room. Show Answer Correct Answer: B) Left luggage. 30. Cool air molecules move ..... A) Quickly. B) Slowly. C) All the above. D) None of the above. Show Answer Correct Answer: B) Slowly. 31. Helium is used in- A) Observatory balloons. B) In filament bulbs. C) Advertisement. D) None of the above. Show Answer Correct Answer: A) Observatory balloons. 32. What are some causes of air pollution? A) Industries. B) Automobiles. C) Mist and smoke. D) All of the above. Show Answer Correct Answer: D) All of the above. 33. Eliminates the need for individual agreements, saving time and efforts A) MPM. B) HIP. C) BSP. D) TPM. Show Answer Correct Answer: C) BSP. 34. Which is the best description of the purpose of a lubricant? A) Reduces the amount of friction and increases the amount of thrust. B) Reduces the amount of friction and increases useful energy transfer. C) Reduces wasteful energy transfer and increases the amount of thrust. D) None of the above. Show Answer Correct Answer: B) Reduces the amount of friction and increases useful energy transfer. 35. Where does respiration happen in the cell? A) Nucleus. B) Cell membrane. C) Mitochondria. D) Ribosomes. Show Answer Correct Answer: C) Mitochondria. 36. NUC multiply by IROE is A) AC. B) LCF. C) HIP. D) BHC. Show Answer Correct Answer: B) LCF. 37. Acid rain can be traced back to A) The release of particulate matter into the atmosphere. B) Thermal inversions. C) The use of electrostatic precipitators. D) The burning of fossil fuels. Show Answer Correct Answer: D) The burning of fossil fuels. 38. There is ..... even in an empty container. A) Water. B) Air. C) Light. D) None of the above. Show Answer Correct Answer: B) Air. 39. Three-fourth of the Earth's surface is covered with water. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 40. Density of air is greater ..... A) At the top of the mountain. B) At the bottom of the mountain. C) At the center of the mountain. D) None of the above. Show Answer Correct Answer: B) At the bottom of the mountain. 41. I am an air mass that forms over an ocean near the equator. A) Continental polar. B) Maritime tropical. C) Maritime polar. D) Continental tropical. Show Answer Correct Answer: B) Maritime tropical. 42. Noise pollution can cause A) High blood pressure. B) Loss of sleep. C) Hearing loss. D) All of the above. Show Answer Correct Answer: D) All of the above. 43. How does air pollution impact weather patterns? A) Air pollution has no impact on weather patterns. B) Air pollution leads to more predictable weather patterns. C) Air pollution can lead to changes in precipitation and temperature. D) Air pollution only affects air quality, not weather patterns. Show Answer Correct Answer: C) Air pollution can lead to changes in precipitation and temperature. 44. Which of the following causes of pollution? A) Car and vehicle emissions. B) Smog. C) Acid rain. D) Animals and plants dying. Show Answer Correct Answer: A) Car and vehicle emissions. 45. The ..... is the vertical part of the tail. A) Fin. B) Tail. C) Rudder. D) None of the above. Show Answer Correct Answer: A) Fin. 46. What type of air mass is warm, forms in the tropics, and has low air pressure? A) Tropical. B) Maritime. C) Polar. D) Continental. Show Answer Correct Answer: A) Tropical. 47. Select the state of the water in the clouds. A) Solid. B) Gas. C) Liquid. D) Plasma. Show Answer Correct Answer: C) Liquid. 48. 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. 49. The ozone layer protects us from A) Increased atmospheric heat. B) UV rays. C) Decreased atmospheric heat. D) CFCs. Show Answer Correct Answer: B) UV rays. 50. The force that attracts a body toward the center of the earth A) Friction. B) Air resistance. C) Force. D) Gravity. Show Answer Correct Answer: D) Gravity. 51. 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. 52. Ammonium salt is a specific form of ..... A) Nitrogen. B) Ozone. C) Carbon dioxide. D) Oxygen. Show Answer Correct Answer: A) Nitrogen. 53. When and who discovered the hole in the hole in Ozone layer above Antarctica? A) Nasa, September 2004. B) Nasa, September 2007. C) Aura, November 2004. D) ISRO, August 2005. Show Answer Correct Answer: A) Nasa, September 2004. 54. 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. 55. 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. 56. 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. 57. 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) 7, Water. D) 4, limewater. Show Answer Correct Answer: D) 4, limewater. 58. 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. 59. 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. 60. 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. ← 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 7Class 7 Geography Chapter 4 Air Quiz 8Class 7 Geography Chapter 4 Air Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books