• # question_answer Which of the following does not show geometrical isomerism? A) 1, 2-dichloro-l-penteneB) 1, 3-dichloro-2-penteneC) 1, 1-dichloro-l-penteneD)  1,4-dichloro-2-pentene

1, 1-Dichloro-l-pentene does not show geometrical isomerism since it has two identical atoms of chlorine on ${{C}_{1}}$.