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Q.
Which of the following compounds can be optically active?
Organic Chemistry – Some Basic Principles and Techniques
Solution:
Propionic acid is $CH _{3} CH _{2} COOH$. It does not have a chiral carbon 2-chloropropionic acid $CH _{3} CHCl COOH$ has a chiral carbon
So, it is optically active. Other compounds do not have a chiral carbon.