Discussion
Assertion (A) : Clothes are not washed properly in hard water.
Reason (R) : Hard water contains many minerals.
Answer: B
Correct answer: Both A and R are true but R is NOT the correct explanation of A.
Both statements are true, but the reason is too loose to be the explanation. What spoils washing is specifically the calcium and magnesium ions, which react with soap to form an insoluble scum instead of lather; other dissolved minerals do no such thing. R does not explain A.
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