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Question

Maximum prescribed limit of Zn in drinking water is:

A
1 ppm
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B
10 ppm
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C
4 ppm
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D
5 ppm
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Solution

The correct option is D 5 ppm
Zinc is one of the important trace elements that play a vital role in the physiological and metabolic process of many organisms. Nevertheless, higher concentrations of zinc can be toxic to the organism.
It plays an important role in protein synthesis and is a metal which shows fairly low concentration in surface water due to its restricted mobility from the place of rock weathering or from the natural sources.
According to the standards maximum prescribed limit of Zn in drinking water is 5ppm

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