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Chemistry · 2026 · 2 marks
CBSE 2026 · Region 1 · Set 2 · Q21
Differentiate between the following: 2 × 1 (i) Acidic amino acids and basic amino acids (ii) Nucleotide and Nucleoside
Differentiate between the following: \(\displaystyle \mathbf{2} \times \mathbf{1} \)
(i)
Acidic amino acids and basic amino acids
(ii)
Nucleotide and Nucleoside
Marking-scheme solution
(i)
Acidic amino acids are those in which – COOH groups are more than – NH2
groups whereas basic amino acids are those in which – NH2 groups are more
than – COOH groups.
(ii)
Nucleotide: - Base + Sugar + Phosphate group whereas Nucleoside: -
Base + Sugar.
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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.