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Subject :NSO    Class : Class 8

One word answers are given for a few statements. Mark the answer which is not correct.

A Resources which will either never run out or are replaced within a reasonable period of time - Renewable resources.
B Wise and careful use of resources by not wasting them - Conservation.
C Conversion of wood into coal over million of years due to high temperature and pressure under the earth - Carbonisation.
D A black, viscous liquid extracted from the rocks which is a source of hydrocarbons - Coal tar.


Ans 1:

Class : Class 8

Ans 2:

Class : Class 9

Ans 3:

Class : Class 8

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