What is the relationship between the members of following pairs of structures?

cbse
organicchemistry

#1

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?


#2

(i) Structural isomers (differ in position of the functional group)
(ii) Geometrical isomers (trans and cis isomers respectively)
(iii) Resonance contributors (differ in the position of electrons but not atoms.)