Question

Temporary hardness of water is due to the presence of
(A) Magnesium bicarbonate
(B) Calcium bicarbonate
(C) sodium bicarbonate
(D) Calcium sulphate​

Answer 1

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★ Temporary hardness of water is due to the presence of

(A) Magnesium bicarbonate ✅

(B) Calcium bicarbonate

(C) sodium bicarbonate

(D) Calcium sulphate

Answer 2

Answer:

calcium hydrogencarbonate

Explanation:

Ca(HCO3)2(aq) and magnesium hydrogencarbonate Mg(HCO3)2(aq). Both calcium hydrogencarbonate and magnesium hydrogencarbonate decompose when heated.