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MCQ Class 7 Geography Chapter 4 Air, , Question 1., , Pressure is associated with cloudy skies and wet weather and, pressure is associated with clear and sunny skies., , (a) Low, Normal, , (b) Normal, High, , (c) Low, High, , (d) High, also High, , , , Question 2., , Jet planes flying in the sky leave a trail behind them, (a) Black, , (b) Blue, , (c) White, , (¢) Grey, , , , , , Question 3., , The standard unit of measuring temperature is, (a) Fahrenheit, , (b) Meter, , (c) Kelvin, , (d) Celsius, , Question 4., , When water evaporates from land and different water bodies, it becomes, (a) Ice, , (b) Snow, , (c) Rain, , (d) Water Vapour

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Question 5., , Cold airis______ than hot air, (a) Small and heavy, , (b) Less denser and light, , (c) Denser and heavy, , (d) Small and light, , Question 6., , The winds blow constantly throughout the year in a particular direction., (a) Directional, , (b) Local, , (c) Permanent, , (d) Seasonal, , Question 7., , Carbon dioxide released in the atmosphere creates a, (a) Green house effect, , (b) Carbon effect, , (c) Earth effect, , (d) Dioxide effect, , , , Question 8., is this hour-to-hour, day to day condition of the atmosphere, , , , (a) Wind, , (b) Weather, (c) Season, (d) Climate, , Question 9., , As we the layers of atmosphere, the pressure, (a) go up, rise, , (b) go down, falls

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(c) go down, does not change, (d) go up, falls, , Question 10., , Green plants use to make their food and release, (a) Oxygen, helium, , (b) Carbon dioxide, hydrogen, , (c) Helium, hydrogen, , (d) Carbon dioxide, oxygen, , Question 11., , What is released in the air from the burning of fuels?, (a) Carbon dioxide, , (b) Helium, , (c) Nitrogen, , (d) Argon, , , , Question 12., , Green House gas is, (a) Nitrogen, , (b) Oxygen, , (c) Ethane, , (d) Carbon dioxide, , Question 13,, , Which of the following is not the types of rainfall, (a) Orographic rainfall, , (b) Cyclonic rainfall, , (c) Convectional rainfall, , (d) Seasonal rainfall

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Question 14., , The degree of hotness and coldness of the air is known as, (a) Weather, , (b) Temperature, , (c) Climate, , (d) Season, , Question 15., , Which layer is almost free from clouds, (a) Troposphere, , (b) Mesosphere, , (c) Stratosphere, , (d) Thermosphere, , Question 16., , On the Celsius scale the water freezes at and boils at, (a) 32°C, 232°C, , (b) 10°C, 90°C, , (c) 100°C, 0°C, , (d) 0°C, 100°C, , , , , , Question 17., , Meteorites burn up in this layer on entering from the space, (a) Thermosphere, , (b) Mesosphere, , (c) Troposphere, , (d) Stratosphere, , Question 18., , Which is the second most plentiful gas in the air, (a) Nitrogen, , (b) Argon

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(c) Oxygen, (d) Hydrogen, , Question 19., , Our earth is surrounded by a huge blanket of, (a) Sand, , (b) Air, , (c) Plants, , (¢) Water, , Question 20., , The air pressure is highest at, (a) Plain level, , (b) Plateau level, , (c) Sea level, , (d) Mountain level