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Chemistry · 2025 · 2 marks
CBSE 2025 · Region 4 · Set 1 · Q21
What is meant by essential amino acids? Why are amino acids amphoteric in nature?
What is meant by essential amino acids ? Why are amino acids amphoteric in nature ?
Marking-scheme solution
•
Amino-acids which cannot be synthesized in the body and must be obtained through
diet.
•
In zwitter ionic form, amino-acids react both with acids and bases./ Due to the presence
of both carboxylic group and amino group.
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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.