Isomers

Question 1

Stereoisomer

Answer 1

Same structural formula, different arrangements in space

Question 2

Structural isomer

Answer 2

Same molecular formula but different arrangements of atoms on the main carbon chain

Question 3

Optical Isomers

Answer 3

Non superimposable images of each other

Question 4

Difference between Cis Trans and E/Z

Answer 4

E/Z uses priority groups and all substituents has to be different
Whereas, Cis / Trans 2 substituents have to be the same