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A water sample has ppm level concentration of the following metals:

Question:

A water sample has ppm level concentration of the following metals: $\mathrm{Fe}=0.2 ; \mathrm{Mn}=5.0 ; \mathrm{Cu}=3.0$; $\mathrm{Zn}=5.0$. The metal that makes the water sample unsuitable drinking is :

  1. $\mathrm{Zn}$

  2. $\mathrm{Fe}$

  3. $\mathrm{Mn}$

  4. $\mathrm{Cu}$


Correct Option: , 3

Solution:

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