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Chemistry · 2025 · 3 marks
CBSE 2025 · Region 5 · Set 1 · Q28
(a) Name the type of linkage responsible for the formation of proteins from α -amino acids. (b) Write any two differences between DNA and RNA.
(a)
Name the type of linkage responsible for the formation of proteins from $\displaystyle \alpha$-amino acids.
(b)
Write any two differences between DNA and RNA.
Marking-scheme solution
(a)
Peptide linkage
(b)
DNA
RNA
Double stranded
Single stranded
Sugar is deoxyribose
Sugar is ribose
Thymine base is present
Uracil base is present
It replicates
It does not replicate
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CBSE Class 12 Chemistry past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.