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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
How is ozone layer useful for the living things on earth? |
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Answer» Ultraviolet rays coming from the sun are harmful for living things, but the ozone layer absorbs them and protects the living world from those rays. |
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| 102. |
The atmosphere consists of a mixture of ………… (a) liquid (b) solid (c) gases |
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Answer» Correct option is (c) gases |
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| 103. |
Almost all the water vapour in the atmosphere is contained in the ……… (a) troposphere (b) stratosphere (c) mesosphere |
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Answer» Correct option is (a) troposphere |
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| 104. |
Which layer of the atmosphere is closest to the surface of the earth? |
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Answer» The troposphere is closest to the surface of the earth. |
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| 105. |
What is groundwater? How can we obtain it? |
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Answer» 1. There is a lot of water stored in the underground layers of rock. 2. It is called groundwater. 3. We can obtain it by means of dug wells and bore wells. 4. Many lakes and wells get water from underground springs |
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| 106. |
What is the ozone layer? |
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Answer» In the lower part of the stratosphere, there is a layer of a gas called ozone. |
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| 107. |
How do we get rain? |
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Answer» 1. As the water vapour is lighter than air, it rises high up into the atmosphere. 2. As it goes higher, it cools and condenses into fine droplets of water. 3. These droplets are so small and light that they float in the atmosphere forming clouds. 4. These small droplets join together and form bigger drops that are heavy. 5. These heavy drops of water cannot float, so they fall down on the earth in the form of ‘rain’. |
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| 108. |
As we go higher in the troposphere, it becomes ………… (a) hotter (b) humid (c) cooler |
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Answer» Correct option is (c) cooler |
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| 109. |
Explain troposphere. |
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Answer» 1. The layer of air that extends from the earth’s surface to a height of about 13 km is called the troposphere. 2. The conditions in the troposphere change continuously. As this layer touches the surface of the earth, the living world gets greatly affected. 3. As we go higher in the troposphere, the air gets cooler and rarer. 4. Almost all the water vapour in the atmosphere is contained in the troposphere. That is why, all weather-related phenomena such as formation of clouds, rain, fog, winds and storms takes place in troposphere. |
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| 110. |
What happens to the air as we go higher in the troposphere? |
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Answer» As we go higher in the troposphere the air becomes rarer and cooler. |
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| 111. |
Give two examples of each:(i) Weather-related events(ii) Sources of water |
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Answer» (i) Clouds, rain (ii) River, lake |
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| 112. |
Give geographical reason:All weather-related phenomena take place in the troposphere. |
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Answer» 1. Almost all water vapour in the atmosphere is present in the troposphere. 2. Therefore, all weather related phenomena take place in the troposphere. |
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| 113. |
Where are polar bears found? |
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Answer» Polar bears are seen only in the snowbound polar regions. |
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| 114. |
The polar bear is seen only in the ……………polar regions. (a) rain bound (b) windblown (c) snowbound |
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Answer» Correct option is (c) snowbound |
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| 115. |
Where are kangaroos found? |
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Answer» Kangaroos are found only in Australia. |
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| 116. |
Zebras are found in ……………(a) Africa (b) India (c) Australia |
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Answer» Correct option is (a) Africa |
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| 117. |
Kangaroos are found only in …………… (a) Africa (b) India (c) Australia |
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Answer» Correct option is (c) Australia |
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| 118. |
This …………… world constitutes the biosphere. (a) living (b) non-living (c) material |
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Answer» Correct option is (a) living |
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| 119. |
Match the following:Column ‘A’Column ‘B’(1) Rakesh Sharma went to space(a) 2008(2) Chandrayaan I launched(b) 2014(3) MOM launched in space(c) 1984(4) MOM established in an orbit(d) 2013 |
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