Which of the following acids does not exhibit optical isomerism?
Maleic acid
$\alpha -$amino acids
Lactic acid
Tartaric acid
Which of the following has both plane of symmetry and centre of symmetry
Which of the following compounds are meso forms ?
Of the following, the compound possessing optical isomerism
The separation of a racemic mixture into pure enantiomers is termed as
Given : $I$ and $II$ are