Question

A water sample has ppm level concentration of the following metals:
Fe = 0.2, Mn = 5.0, Cu = 3.0, Zn = 5.0. The metal that makes the water sample unsuitable for drinking is (A) Cu (B) Mn
(C) Fe (D) Zn
[JEE Main 2019]

Answer 1

Answer:

67678

Explanation:

Answer 2

Answer:

Mn is the right option

Explanation:

ppm level concentration of Mn which makes water suitable for drinking is 0.05