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Question

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - CH2 - group.


A

Both ASSERTION REASON are correct and REASON is the correct explanation for ASSERTION

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B

Both ASSERTION REASON are correct but REASON is not the correct explanation for ASSERTION

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C

ASSERTION is correct but REASON is incorrect

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D

Both ASSERTION REASON are incorrect.

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Solution

The correct option is A

Both ASSERTION REASON are correct and REASON is the correct explanation for ASSERTION


Here we have alkanes that differ by one - CH2 - (methylene) in molecular formula/weight. The subsequent homologues of alkanes differ by a - CH2 - . Thus the reason explains the assertion, which is true.

Hence, the answer is A


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