JEE Main 2019ChemistryEnvironmental ChemistryEasyMCQ

JEE Main 2019 — Environmental Chemistry Question with Solution

JEE Main 2019 (09 Jan Shift 1)

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

Choose an option

Show full solutionCorrect option: C
Correct answer
CMn

Step-by-step explanation

The concentration of the ions for drinking water are,

Fe≤0.2 ppm

Mn≤0.05 ppm

Cu≤3.0 ppm

Zn≤5.0 ppm

Here, Mn concentration is greater than the allowed limit. So, it makes the water sample unsuitable for drinking.

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About this question

This is a previous-year question from JEE Main 2019, covering the Environmental Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.