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 for drinking is:
Select the correct option:
A
Cu
B
Mn
C
Zn
D
Fe
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Prescribed level of Mn is 0.5 ppm. So water sample containing Mn = 5ppm is water unsuitable for drinking.
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