1
Question
The river water is said to be polluted with acidic wastes if the pH of river water is :
(a) zero
(b) above 7
(c) below 7
(d) exactly 7
(a) zero
(b) above 7
(c) below 7
(d) exactly 7
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Solution
(c) below 7
Acidic substances have less than 7 pH.
Acidic substances have less than 7 pH.
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