KVPY PROBLEMS (PREVIOUS YEARS)

Given the structure of $\mathrm{D}-(+)$ -glucose as

 The structure of $\mathrm{L}-(-)$ glucose is

Which of the following molecules can exhibit optical activity?

The maximum number of cyclic isomers (positional and optical) of a compound having formula ${\mathrm{C}}_3{\mathrm{H}}_2{\mathrm{Cl}}_2$ is

The number of stereoisomers possible for the following compound is
${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}\left(\mathrm{Br}\right)-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

The number of stereoisomers possible for the following compound is ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_3$:

Which of the following alkenes can generate optically active compounds upon hydrogenation?

$X$ and $Y$

 are

The correct statement about the following compounds

 is: