Which of the following compound is optically active?
A
CH3CH2COOH
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B
HOOC−CH2−COOH
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C
CH3CH(OH)COOH
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D
Cl2CHCOOH
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Solution
The correct option is CCH3CH(OH)COOH CH3CH(OH)COOH is optically active as it contains a chiral C atom. It exists in the form of a pair of enantiomers (d, l isomers). Note: Four different atoms/ groups of atoms are attached to chiral C atom.