Question

Water that does not give lather with soap is water ______________ (hard water/soft water ).

Answer 1

Types of water:

• Soft water is the water that easily gives lather with the use of soap and is free from salts of magnesium and calcium.
• Hard water is water that contains a high amount of dissolved salts and does not give lather with the use of soap. Hard water results in the formation of a thick, dirty layer (curd-like, insoluble substance) on the surface of water known as scum.

Therefore, Water that does not give lather with soap is hard water.