Chemistry-IUPAC Nomenclature
NEET Chemistry IUPAC Nomenclature Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): The compound with the IUPAC name '3-ketohexanoic acid' has a ketone group on the third carbon.| Reason (R): In IUPAC nomenclature, the principal functional group determines the suffix, and the numbering of the chain starts from the carbon of the principal functional group.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The IUPAC name '3-ketohexanoic acid' indicates that the ketone group is on the third carbon. The principal functional group is the carboxylic acid, which dictates the suffix '-oic acid', and numbering starts from the carbon of the carboxylic acid group.
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