In 'Completing The Analogous Pair', two words are given. These words are related to each other in some way. Another word is also given. The candidate is required to find out the relationship between the first two words and choose the word from the given alternatives, which bears the same relationship to the third word, as the first two bear.
Assertion (A) : Clothes are not washed properly in hard water.
Reason (R) : Hard water contains many minerals.
Clothes are not washed properly in hard water because it does not form lather with soap.
However, it is true that hard water contains mant minerals.