Chemistry - STEREO ISOMERISM Question with Solution | TestHub

(A) M and N are non mirror images(Diastereomers) stereoisomer. because in structure M both hydrogen is same side were as in structure N both hydrogen opposite side.

(B) M and O are identical, because if we draw conformation of M at $180^{\circ }$. we get structure O .

(C) M and P are eantiomer's

First convert Sawhorse projection of M into Newman's projection.

M and $\mathrm{P}\to$ Enantiomer / M and Q → Diastereomers