Which of the following pairs of compounds is a pair of enantiomers ?
How many stereo isomers are possible for the following molecule .
Total number of stereoisomers of the compound $1$ -bromo- $3$ -chlorocyclobutane is
Which of the following cyclopentane derivative is optically inactive ?
Total number of secondary amines (Excluding stereo isomer) possible with the molecular formula $C_5H_{13}N$ is
Which of the following compounds are meso forms ?