AIIMS 2018 Chemistry Oxidation Reactions MCQ Question
Assertion : Oxidation of glucose by water gives saccharic acid
Reason : water oxidized and alcohol
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Br₂ water, which contains bromine in an aqueous solution, acts as an oxidizing agent and can oxidize aldehydes (–CHO) to carboxylic acids (–COOH), but it does not oxidize alcohols (–OH) under mild conditions. Therefore, the statement that Br₂ water only oxidizes –CHO is misleading, as it implies that alcohols are not affected at all, which is not entirely accurate; alcohols can undergo oxidation under stronger conditions. Thus, option D is correct because the assertion is not wholly true or false, making it partially true but not entirely accurate. Options A and B are incorrect because they misinterpret the scope of Br₂ water's oxidizing ability, while C does not fully capture the nuances of the oxidation reactions involved.
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