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Chemistry · 2024 · 2 marks
CBSE 2024 · Region 1 · Set 2 · Q18
What happens when D-glucose is treated with the following reagents? (a) Br_2 water (b) HCN
What happens when D-glucose is treated with the following reagents ?
(a)
$\displaystyle \mathrm{Br}_{2}$ water
(b)
HCN
Marking-scheme solution
(a)
CHO–(CHOH)₄–CH₂OH --Br₂ water--> COOH–(CHOH)₄–CH₂OH
(b)
CHO–(CHOH)₄–CH₂OH --HCN--> CH(CN)(OH)–(CHOH)₄–CH₂OH
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.