Chemistry - STEREO ISOMERISM Question with Solution | TestHub
List - I (Pair of compounds) | List - II (Relation) |
|---|---|
(P)
| (1) Enantiomers |
(Q)
| (2) Diastereomers |
(R)
| (3) Identical |
(S)
| (4) Geometrical isomers |
| (5) Conformational isomers |
The correct option is :
Options:
Answer:
Solution:
(P) (3): Both drawings represent the exact same molecule (1-chlorocyclohexa-1,4-diene) viewed from the same perspective, making them identical.
(Q) (2, 4): The left chair is trans (one equatorial-up, one equatorial-down) and the right chair is cis (one equatorial, one axial), making them both geometrical isomers and diastereomers.
(R) (1): Both are cis-1-chloro-3-bromocyclohexane, but one has both groups on wedges and the other on dashes; since the molecule lacks a plane of symmetry, these non-superimposable mirror images are enantiomers.
(S) (5): Both structures are cis-1-bromo-3-chlorocyclohexane interconverted simply by flipping the chair conformation, making them conformational isomers.
Therefore, the correct option is (B).
