Question

A similarity between optical and geometrical isomerism is that 

(a) each forms equal number of isomers for a given compound 

(b) if in a compound one is present then so is the other

 (c) both are included in stereoisomerism 

(d) they have no similarity.

Answer 1

(c) : Both involves compounds having the same molecular and structural formulae, but different spatial arrangement of atoms or groups.