A pair of stereoisomers might be classified in various ways. Which of the following statement are true with respect to pairs of stereoisomers?
$(a)$ They might be configurational isomers $(b)$ They might be diastereomers
$(c)$ They might be constitutional isomers $(d)$ They might be tautomers
$(e)$ They might be conformational isomers $(f)$ They might be enantiomers
$(g)$ They might be positional isomers
$a, b, c, e$
$b, d, e, f, g$
$a, b, f$
$a, b, c, f$
It is possible to distinguish between optical isomers by
Which of the following compound has plane of symmetry ?
$\begin{array}{*{20}{c}}
{R = - CH - Cl}\\
{|\,\,}\\
{\,\,\,\,C{H_3}}
\end{array}\,\,\,\,,\,\,\,\,\,\,\,\,\,\,\begin{array}{*{20}{c}}
{S = - CH - Cl}\\
{|\,\,}\\
{Br}
\end{array}$
If there is no rotation of plane polarised light by a compound in a specific solvent, though to be chiral, it may mean that
Which of the following will have one of the stereoisomer meso ?
How many are meso molecules