The structural formula of cocaine is shown below. How many stereogenic carbon atoms are there in this molecule ?
$1$
$2$
$3$
$4$
Which one of the following shows optical activity
Which of the following reactions will not produce a racemic product ?
Which of the following is most likely to show optical isomerism
Which pairs of the salts would have identical solubilities in methanol ?
$CH_3 - CHCl - CH_2 - CH_3$ has a chiral centre. Which one of the following represents its $R-$configuration ?