Match the List I with List II and select the correct answer using the codes given below in the lists:
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a
1 – C, 2 – D, 3 – D, 4 – A
b
1 – B, 2 – A, 3 – C, 4 – D
c
1 – B, 2 – D, 3 – C, 4 – A
d
1 – C, 2 – A, 3 – B, 4 – D
answer is D.
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Detailed Solution
Heavy water is D2O .Temporary hardness is caused for carbonates and bicarbonates of calcium and magnesium.Soft water does not contains any ions.Permanent hardness is caused for sulphate and chlorides of calcium and magnesium.