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JEE Main 20199 JanuaryEvening Shift

Exam: JEE Main
Year: 2019
Date: 9 January
Shift: Evening Shift
Subject: Chemistry
Chapter: Hydrogen

JEE Main 2019 · 9 January · Evening Shift · Chemistry · Hydrogen

The temporary hardness of water is due to:

The temporary hardness of water is due to:

Options

A ${Na}_{2}{SO}_{4}$
B $NaCl$
C ${CaCl}_{2}$
DCa{ $\left({HCO}_{3}\right)}_{2}$

Correct answer

D. Ca{ $\left({HCO}_{3}\right)}_{2}$

Step-by-step solution

{Cl}^{-}

ions are the cause of permanent hardness &

{HCO}_{3}^{-}

ions are the cause of temporary Hardness.

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