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JEE Main 2003

Exam: JEE Main
Year: 2003
Subject: Chemistry
Chapter: Hydrogen

JEE Main 2003 · Chemistry · Hydrogen

Which one of the following processes will produce hard water?

Which one of the following processes will produce hard water?

Options

ASaturation of water with $\mathrm{MgCO}_3$
BSaturation of water with $\mathrm{CaSO}_4$
CAddition of $\mathrm{Na}_2 \mathrm{SO}_4$ to water
DSaturation of water with $\mathrm{CaCO}_3$

Correct answer

B. Saturation of water with $\mathrm{CaSO}_4$

Step-by-step solution

Permanent hardness of water is due to chlorides and sulphates of calciumand magnesium.

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