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Q. Zeolite process is used to remove

Environmental Chemistry

Solution:

Zeolite is a silicate of sodium and found as a rock mineral naturally. When zeolite is brought in contact with hard water a simple exchange of bases takes place. $Ca^{2+}$ and $Mg^{2+}$ ions in hard water are exchanged by $Na^{+}$ ions in zeolite. $NO$ precipitate is formed.