How many different stereoisomers are possible for the following compound ?
$\begin{array}{*{20}{c}}
H\\
|\\
{ClHC = HC - C - CH = CHCl}\\
|\\
{Cl}
\end{array}$
$1$
$2$
$3$
$4$
Which of the following pair represent pair of diastereomers ?
Which one of the following shows optical activity
Which of the following molecules has axis of symmetry and a coaxial plane of symmetry ?
The two compounds shown below are
are related as