Question

How will you check with the help of soap powder whether water is hard?​

Answer 1

Answer:

soap can be used to check whether a sample of water is hard or soft. Soaps do not give lather with hard water Instead form scum . Where as they give leather with soft water . if we do not get leather in water while using soap powder, we can say it is hard water.

Answer 2

Answer:

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Explanation: