1.

Which of the following used in CLARK method to remove temporary hardness of water ?

Answer»

`Na_2CO_3`
Sodium hexametaphosphate
`CA(OH)_2`
Zeolite

Solution :`Ca(HCO_3)_(2(aq)) + Ca(OH)_(2(aq)) to 2CaCO_(3(s)) darr + 2H_2O_((L))`


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