Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Structure (I) and (II) represent trans-1,4-dimethylcyclohexane because one methyl group points up and the other points down in both structures. Structure (III) and (IV) represent cis-1,4-dimethylcyclohexane because both methyl groups point upward in both structures.

Statement (B) is correct because (II) is trans and (III) is cis, making them geometrical isomers.

Statement (C) is correct because (III) and (IV) are different chair conformations (ring-flips) of the same cis molecule, making them conformational isomers.