Optical isomers have:
A) property of chirality
B) almost identical chemical properties
C) almost identical physical properties
D) similar rotation of plane polarised light

When two substances with the same molecular and structural formula cannot be superimposed on one another, optical isomerism primarily arises. We can sum them up by saying that they are mirror versions of one another. As an alternative, it can also be discovered in materials with an asymmetric carbon atom.

Optical isomers have properties of chirality, almost identical chemical and physical properties.