Which of the following does not show geometrical isomerism?

Options

A. 1,2 -dichloro-1-pentene
B. 1,3-dichloror-2-pentene
C. 1,1-dichloro-1-pentene
D. 1,4-dichloror-2-pentene

Answer

C

Explanation

`Ato overset(Cl)overset(|)(CH)=overset(Cl)overset(|)(CH)-CH_(2)-CH_(2)-CH_(3)` show G.I
`B to overset(Cl)overset(|)(CH_(2))-CH=underset(Cl) underset(|)(C)-CH_(2)-CH_(3)` show G.I.

`D to overset(Cl) overset(|)(CH_(2))-CH=CH-overset(Cl)overset(|)(CH)-CH_(3)` show G.I