20. Assertion (A) : Synthetic detergents can lather when in hard water. Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water. A.Both A and R is true and R is the correct explanation of A B.Both A and R is true but R is not a correct explanation of A C.A is true but R is false D.A is false but R is true
Answer: Option A Solution: Both A and R is true and R is the correct explanation of A.
