AIIMS2019Chemistry-Aldehydes and Ketones

AIIMS 2019 Chemistry Oxidation Reactions MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Assertion : Glyceraldehyde reacts with 2 2 Br /H Oto form achiral compound

Reason: –CHO and –CH2OH\text{–CH}_{2}\text{OH} both are oxidized

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Correct Answer

Option C

Detailed Explanation

Option C is correct because the reaction of glyceraldehyde with Br₂/H₂O leads to the formation of a carboxylic acid, specifically glyceric acid, through the oxidation of the aldehyde group. Br₂/H₂O acts as an oxidizing agent, facilitating the conversion of the aldehyde (-CHO) to a carboxylic acid (-COOH) by adding an oxygen atom and removing two hydrogen atoms.

Option A is misleading as it implies that glucose is the only substrate affected by Br₂/H₂O, while the question specifically addresses glyceraldehyde. Since options B and D are not provided, they cannot be evaluated for correctness.

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