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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.
1761050_1288672b62ce4908b523a812947ddd1a.png


A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and 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 and Reason are incorrect
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Solution

The correct option is C Assertion is correct but Reason is incorrect
As, 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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