How many minimum number of carbons are needed for an optically active ether?
The correct option is C. 2
Generally, ether compounds have two alkyl or aryl groups ( R-O-R'), For the optically active, the compound must have symmetry in atoms or groups. Hence 2 minimum carbon is needed for ether and that two carbon may attach different atoms/groups other than carbon like −OH,SO2,NO2, etc.
We need a minimum of 2 carbons in an optically active ether.