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Chemistry · 2024 · 2 marks
CBSE 2024 · Region 4 · Set 3 · Q21
(a) What happens when Glucose reacts with Nitric acid? Write chemical equation. (b) Write one structural difference between DNA and RNA. 1 × 2
(a)
What happens when Glucose reacts with Nitric acid ? Write chemical equation.
(b)
Write one structural difference between DNA and RNA. $\displaystyle \mathbf{1} \boldsymbol{\times} \mathbf{2}$
Marking-scheme solution
(a)
CHO—(CHOH)$\displaystyle _4$—CH$\displaystyle _2$OH $\displaystyle \xrightarrow{\text{HNO}_3}$ COOH—(CHOH)$\displaystyle _4$—COOH
(b)
DNA has Double stranded helix structure while RNA is a single stranded helix structure.
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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.