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- NSO_4_Our_Environment 0%
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- Question 1 of 15
1. Question
Water that is free from disease-causing organisms, chemicals and other impurities is called
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2. Question
Germs are the visible impurities present in dirty water.
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3. Question
Mud can be removed from the water by adding bleaching powder
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4. Question
Cutting down of trees on a large scale is called
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5. Question
Fill in the blank
Harmful substances added to the environment are called
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6. Question
Land productivity____________________due to land pollution
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7. Question
Find the incorrect one
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8. Question
Pollution increases the amount of oxygen present in the water
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9. Question
Tick the correct option
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10. Question
We should use plastic bags as they don’t cause pollution
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11. Question
Tick the correct option
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12. Question
Evaporation increases with
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13. Question
Take a bottle of water from the refrigerator and place it on a table. After a few minutes, there will be drops on the outer surface of the bottle. This shows that
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14. Question
Why dew occurs commonly during the winter season?
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15. Question
Tick the option where the weather remains almost the same the whole year
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