Which of the following compounds is not chiral
$DC{H_2}C{H_2}C{H_2}Cl$
$C{H_3}C{H_2}CHDCl$
$C{H_3}CHDC{H_2}C{H_2}Cl$
$C{H_2}CHClC{H_2}D$
Which of the following is optically active
The total number of stereoisomer possible for $2, 3$ -dichloro butane
Optical activity of an enantiomeric mixture is $+12.6^{\circ}$ and the specific rotation of $(t)$ isomer is $+30^{\circ}$. The optical purity is $........\%$
The absolute configurations of the two centers in the following molecule are
How many stereoisomers possible for