The property by virtue of which a compound can rotate the plane of plane-polarized light is known as:

Total number of stereoisomers of the compound $1-$bromo$-3-$chlorocyclobutane.

Which of the following are enantiomers?

Which dimethylcyclobutane is optically active?

Which of the following is an optically active molecule?

In the reaction sequence shown below,determine the total number of stereoisomers formed as the final product $D$. The starting material is $CH_3-CD(CH_3)-C \equiv C-CO-CH_3$. The reaction $A$ is $LiAlH_4$ (or similar reducing agent to reduce the alkyne to a cis-alkene),$C$ is the cis-isomer,and the final step is the addition of $Br_2/CCl_4$.