1.

The water which form lather directly with the soap is called __________(a) Hard water(b) Soft water(c) Partially hard water(d) Very hard waterI got this question during an online interview.I need to ask this question from Estimation of Hardness topic in section Water of Applied Chemistry

Answer»

The correct option is (b) SOFT WATER

The explanation is: The water which forms lather DIRECTLY with the soap is CALLED soft water. The water which forms precipitates when REACTED with soap is called as the hard water.



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