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Which of the following amino acids is optically inactive?(a) Glycine(b) Alanine(c) Lysine(d) ValineThis question was addressed to me in quiz.This intriguing question comes from Biomolecules topic in section Biomolecules of Chemistry – Class 12

Answer»

Right option is (a) Glycine

Best explanation: Glycine is the only naturally OCCURRING α-amino acid that is OPTICALLY inactive. This is because the α-carbon of glycine has two hydrogen ATOMS attached to it.



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