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Chemistry · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 3 · Q15
Assertion (A): The pentaacetate of glucose does not react with H_2 N - OH. Reason (R): It indicates the absence of free -CHO group in glucose.
Assertion (A) : The pentaacetate of glucose does not react with $\displaystyle \mathrm{H}_{2} \mathrm{~N}-\mathrm{OH}$.
Reason (R) : It indicates the absence of free -CHO group in glucose.
Official answer
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
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CBSE Class 12 Chemistry past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.