JEE Main · ChemistryMedium

$Which reagent is used to confirm the presence of a carbonyl group in glucose?$

A. $NH_{2} OH$
B. $(CH_{3} CO)_{2} O$
C. $HNO_{3}$
D. $Br_{2} /H_{2} O$

Show correct answer & step-by-step solution

Correct answer: A — $NH_{2} OH$

Solution

$Glucose reacts with NH_{2} OH to form glucose oxime.$
$This reaction is characteristic of aldehydes and ketones.$
$Acetic anhydride confirms the presence of five hydroxyl groups.$
$Hence the answer is (A).$

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