Question

# Assertion :(Ref image) is 3-methyl butanoic acid. Reason: In poly function group, the substituent should be given lower number than the principal functional group.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect

Solution

## The correct option is C Assertion is correct but Reason is incorrectAs, the functional group is $$-COOH$$, the numbering is done from RHS to give minimum number to carbon atom bearing the functional group. Rewriting the above structure. The chain consists of four carbon atoms. Hence its a derivative of butane. The substituent is the methyl group. So the above compound is $$3-$$ methyl butanoic acid.Chemistry

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