Classification - Verbal and Reasoning

Directions to SolveIn each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related.
Q1:

Choose the pair in which the words are differently related from the rest.

A Principal : School

B Soldier : Barrack

C Artist: Troupe

D Singer : Chorus

ANS:A - Principal : School

Explanation: In all other pairs, second is a collective group of the first.