Reasoning - Classification

Directions to solve :
In each of the following questions, four pairs of words have been given, out of which three are alike in some manner and one is different. Choose out the odd pair.
21.
Answer

Answer :

Option B

Explanation :


In all other pairs, first is the disease caused by the second.
22.
Answer

Answer :

Option B

Explanation :


In all other pairs, the first, when becomes as expert, is given the name of second.
23.
Answer

Answer :

Option C

Explanation :


In all other pairs, first is required by the second for its functioning.
24.
Answer

Answer :

Option D

Explanation :


In all other pairs, second is a part of the first.
25.
Answer

Answer :

Option C

Explanation :


In all other pairs, first is the study of second.
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