Question

Which of the following will rotate the plane of polarisation in exactly equal amounts (same magnitude) but in opposite directions?

• A. Diastereomers
• B. Enantiomers
• C. Cis-trans isomers
• D. None of these

Answer 1

The correct option is B Enantiomers

Enantiomers will rotate the plane of polarisation in exactly equal amounts (same magnitude) but in opposite directions.

Dextrorotary designated as d or (+) gives clockwise rotation (to the right) while laevorotatory designated as l or (-), gives anti-clockwise rotation (to the left).

Hence option B is correct.