1.

Assertion (A) : Synthetic detergents can lather when in hard water.Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water.

A. oth A and R is true and R is the correct explanation of A
B. oth A and R is true but R is not a correct explanation of A
C. is true but R is false
D. is false but R is true
Answer» B. oth A and R is true but R is not a correct explanation of A


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