In Choose odd pair of words type of questions, certain pairs of words are given out of which the words in all the pairs except one, bear a certain common relationship. The candidate is required to decipher this relationship and chose the pair in which the words are differently related, as the answer.

Choose or find odd pair of words

(Saw : Wood) , (Pen : Paper) , (Author : Book) , (Chalk : Blackboard)

A. Saw : Wood
B. Pen : Paper
C. Author : Book
D. Chalk : Blackboard
Answer: C . Author : Book

Justification: In all other pairs, first is the tool which works over the second.