Q1 F of 33 Page 77

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Gradual increase of the earth’s temperature by the green house gases in the atmosphere is called _____________.


a) Acid rain is a type of atmospheric pollution which is caused by dissolving of poisonous gases like SO2 ,CO2 etc in the atmospheric water (rain) to form dissolved acids and fall to the earth.


b) Thermal pollution- Thermal Pollution is a process in which water gets polluted by its temperature rises by Thermal power plants which uses water as coolant.


c) Global warming- Global Warming is a process in which the greenhouse gases like SO2 ,CO2, remains in the earth’s atmosphere which causes an increase in the earth’s atmosphere.


d) Deforestation- Deforestation is a process of cutting or removal of tress.

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1 D

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The extraction of valuable minerals and other geological minerals from the mines is ___________.


 1 E

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The Secondary sector of the economy produces ____________from raw materials.


 1 G

Consider the given statements and choose the right option given below.

Assertion (A): Ozone layer in the stratosphere is considered as a protective shield.


Reason(R): It prevents the UV radiation from reaching the earth surface.


 1

Consider the given statements and choose the right option given below.

Assertion (A): In tertiary activities, instead of producing goods by themselves, they are in the process of production.


Reason(R): People in Tertiary activities are purely eco-friendly