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.
16.
Answer

Answer :

Option B

Explanation :


In all the pairs, first is an instrument to measure the second.
17.
Answer

Answer :

Option D

Explanation :


In all other pairs, first is the head of the second.
18.
Answer

Answer :

Option D

Explanation :


In all other pairs, second is the unit to measure the first. On the other hand, barometer is an instrument.
19.
Answer

Answer :

Option B

Explanation :


In all other pairs, second is the result of the first.
20.
Answer

Answer :

Option A

Explanation :


In all other pairs, second is a product obtained from the first.
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