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 Fan : Blades

B Lamp : Bulb

C Clock : Alarm

D Bicycle : Pedal

ANS:C - Clock : Alarm

Explanation: In all other pairs, second is an essential part which serves the main purpose of the first.