Lactic acid is an optically active compound due to presence of assymmetric carbon. It exist in D and L form in the ratio 1:1, forming a racemic mixture. Related Theory Enantiomers are stereoisomers which are non superimposable, mirror images. A mixture of equal amounts of two stereoisomers of an optically active substance is called a racemic mixture or racemate.
In this reaction: … an symmetric centre is generated. The acid obtained would be:
NEET UG 2003 — Chemistry Organic Chemistry
2003mcqeasy
In this reaction: CH3CHO+HCN⟶H.OH→CH3CH(OH)CNCH3CH(OH)COOH an symmetric centre is generated. The acid obtained would be:
Official previous-year question
Held on 30 Apr 2003 · Verified 9 Jul 2026.
Options
- A
D-isomer
- B
L-isomer
- C
50%D+50% L-isomer
- D
20%D+80% L-isomer
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