Hydrogen And Its Compounds Question 62

Question: Which one of the following removes temporary hardness of water

Options:

A) Slaked lime

B) Plaster of Paris

C) Cuprous

D) Hydrolith

Show Answer

Answer:

Correct Answer: A

Solution:

Slaked lime removes temporary hardness of water. $ Ca{{(OH)}_2}+\underset{\text{From hard water}}{\mathop{Ca{{(HCO_3)}_2}}}\to 2CaCO_3\downarrow +2H_2O $

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