Question

Which of the following compounds will exhibit geometrical isomerism?

• A. 1-Phenyl-2-butane
• B. 3-Phenyl-1-butene
• C. 2-Phenyl-1-butene
• D. 1,1-Diphenyl-1-propene

Answer 1

Answer: (A)

Only compound 1-phenyl-2-butene can show geometrical isomerism.

(a) 3-phenyl-1-butene



(No geometrical isomerism)

(b) 2-phenyl-1-butene



(No geometrical isomerism)

(c) 1,1, diphenyl-1-propene



(No geometrical isomerism)

(d) 1-phenyl-2-butene :

$C{\stackrel{4}{H}}_3-H\stackrel{3}{C}=\stackrel{1}{C}H-C\stackrel{1}{H_2}-ph$

The correct possible answer is (d) but due printing mistake. No answer is correct.