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

(Solder : Tin) , (Haematite : Iron) , (Bauxite : Aluminium) , (Malachite : Copper)

A. Solder : Tin
B. Haematite : Iron
C. Bauxite : Aluminium
D. Malachite : Copper
Answer: A . Solder : Tin


In all other pairs,first is the name of a metal of which the second is an ore.
On the other hand, Solder is an alloy.