Disymmetric object is one which is
Superimposable on its mirror image
Non-superimposible on its mirror image
Optically inactive
Achiral
Which of the following acids does not exhibit optical isomerism?
Which of the following compound can exist in two different stereoisomeric form
$R$ and $S$ configuration of compound $(A)$ & $(B)$ will be
The structural formula of cocaine is shown below. How many stereogenic carbon atoms are there in this molecule ?
Which of the following compounds may not exist as enantiomers