Question

Which of the following are resolvable?

• A.
• B.
• C.
• D.

Answer 1

Answer: (B), (D)

[Does not have asymmetrical $C$ atom because two (R) groups are same

$R$ (It is optically active since it has an asymmetrical $C$ atom. Four different groups are $R,R^{\prime },C{H}_3$, and H.)
c. It is optically inactive due to the presence of diagonal plane of symmetry and alternating axis of symmetry
d. It is optically active since it has an asymmetrical C atom