The number of possible isomers of the compound with molecular formula ${C_7}{H_8}O$ is
$3$
$5$
$7$
$9$
Separating of $d$ and $l$ enantiomorphs from a racemic mixture is called
Total number of stereoisomers of the compound $1-$ bromo $-3-$ chloro cyclobutane
Which of the following structure is not meso- $2,3$ -butanediol ?
Total number of secondary amines (Excluding stereo isomer) possible with the molecular formula $C_5H_{13}N$ is
It is possible to distinguish between optical isomers by