AIIMS2010Chemistry-Aldehydes, Ketones & Carboxylic Acids

AIIMS 2010 Chemistry Reactions of Aldehydes and Ketones MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is

A

CHO

B

CHO

C

COOH

D

CO₂H

Correct Answer

Option A

Detailed Explanation

When cyclohexene undergoes ozonolysis, it forms an ozonide that can be cleaved to yield carbonyl compounds. In this case, the ozonolysis of cyclohexene produces a mixture of aldehydes and/or ketones. Upon treatment with zinc dust and water, the ozonide is reduced, typically yielding an aldehyde. Therefore, compound E is likely an aldehyde. When compound E, which is an aldehyde, is treated with aqueous KOH, it undergoes a reaction that can lead to the formation of a carboxylic acid (compound F). However, since the options provided include CHO (which represents an aldehyde) and COOH (which represents a carboxylic acid), we need to identify the correct one. The correct answer is A) CHO, as the question asks for the compound F after treatment with KOH, which is an aldehyde. The other options are incorrect because they either represent similar functional groups or are misrepresented forms of the same functional group. Thus, the correct answer is A) CHO.

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