Which one of the following shows functional group of ketone?
Correct answer: B. CH3 - CO - CH2 - CH3
- A. CH3 -O- CH2 - CH3
- B. CH3 - CO - CH2 - CH3
- C. CH3COCOOH
- D. CH3 - CH2CHO
Explanation
The correct answer is Option B: CH3 - CO - CH2 - CH3. This compound is a ketone with the general formula R-CO-R', and its chemical name is Butanone. Option A is an ether, Option C is Pyruvic acid containing a carboxylic acid and a ketone group, and Option D is an aldehyde. Therefore, they are not examples of ketones.
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Organic chemistry begins with carbon compounds classified by carbon skeleton, saturation and functional group. Work includes identifying groups such as hydroxyl, carbonyl, carboxyl and amino, applying basic nomenclature, and distinguishing structural, geometric and optical isomers, where the same molecular formula does not necessarily mean the same structure or properties.
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