1.

In _____________ when the eater is heated then the soluble salts turns into insoluble ones and removed by filtration.(a) Temporary hardness(b) Permanent hardness(c) Non-carbonate(d) Non-alkalineI have been asked this question in an online interview.I need to ask this question from Estimation of Hardness in section Water of Applied Chemistry

Answer»

The correct ANSWER is (a) Temporary HARDNESS

The best I can explain: The hardness in the temporary hard WATER can be REMOVED by heating and filtrating the insoluble salts.



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