Which among the following statements is correct with respect to the optical isomers?

• Correct answer
  A

  Enantiomers are non-superimposable mirror images
• B

  Diastereomers are superimposable mirror images
• C

  Enantiomers are superimposable mirror images
• D

  Meso forms have no plane of symmetry

Solution

Enantiomers are non-superimposable mirror images. eg, lactic acid
Diastereomers are non-superimposable and are not the mirror images of each other. Moreover, meso form has plane of symmetry.

Hence, the correct answer is option: 'A'.