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Rain is called acid rain, when its pH is...

Rain is called acid rain, when its pH is below

A

7

B

6.5

C

6

D

5.6

Text Solution

Verified by Experts

The correct Answer is:
D
Acid rain is rainfall and other forms of precipitation with a pH less than 5. pH of normal rain is `5.6 -6.5`. It is caused by the large scale emission of acidic gases into the atmosphere from thermal power plants, industries and automobiles.
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