A water is said to be hard if:

It does not lather readily with soap.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

It does not contain minerals.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

It contains minerals.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

It lathers readily with soap.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
It does not lather readily with soap.

Hard water does not lather readily with soap. The substances that cause hardness of water are bicarbonates, sulphates, and chlorides of calcium and magnesium.

Moreover, hard water reacts with soap molecules to form an insoluble white precipitate called as scum.

Suggest Corrections

Similar questions

Soap does not form lather with hard water:-

A water sample contains magnesium bicarbonates. It does not lather with soap. How can we make the water sample useful for cleaning clothes?

Join BYJU'S Learning Program