Dissolved salts of Ca and Mg which types of water impurity?(a) Hardness impurity(b) Soluble colour compounds(c) Insoluble matter impurity(d) PathogenicI got this question in an interview for internship.I would like to ask this question from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology

Dissolved salts of Ca and Mg which types of water impurity?(a) Hardnes

1.	Dissolved salts of Ca and Mg which types of water impurity?(a) Hardness impurity(b) Soluble colour compounds(c) Insoluble matter impurity(d) PathogenicI got this question in an interview for internship.I would like to ask this question from Inorganic Chemical in portion Inorganic Chemical Industries of Chemical Technology
Answer» The CORRECT ANSWER is (a) HARDNESS impurity Easy EXPLANATION: Ca and Mg bicarbonates are the hardness impurities of water and it can be reduced by boiling to precipitate insoluble carbonates, but from sediments. By chemical reaction or ion exchange also it can be removing.

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