The maximum prescribed concentration of copper in drinking water is:
Question:

The maximum prescribed concentration of copper in drinking water is:

  1. $5 \mathrm{ppm}$

  2.  $0.05 \mathrm{ppm}$

  3. $0.5 \mathrm{ppm}$

  4. $3 \mathrm{ppm}$


Correct Option: , 4

Solution:

Maximum prescribed concentration of $\mathrm{Cu}$ in drinking water is $3 \mathrm{ppm}$.

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