By which of the following processes permanent hardness of water can be removed

By which of the following processes permanent hardness of water can be removed

Options

(a) Soda lime
(b) Sodium bicarbonate
(c) Washing soda
(d) Sodium chloride

Correct Answer:

Washing soda

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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