$A + B , A$ and $B$ are
Enantiomers
Diastereomers
Identical
Position isomers
The number of possible isomers of the compound with molecular formula ${C_7}{H_8}O$ is
Racemic mixture is formed by mixing two
Correct configuration of the following is
The configurations of the chirality centres in $D-$ threose (shown) are
Correct configuration of the following molecule is