Question

Which one of the following can exhibit cis-trans
isomerism ?
(a) CH₃ -CHCl -COOH
(b) H -C ≡ C - Cl
(c) ClCH = CHCl
(d) ClCH₂ -CH₂Cl

Answer 1

Answer: here's your answer

Answer 2

(c) ClCH = CHCl

Explanation:

Due to restricted rotation about double bond, the alkene shows geometrical isomerism because the relative position of atoms or groups attached to the carbon atoms of the double bond get fixed. The same group of atom is attached with double bond bearing carbon. So ClCH = CHCl exhibit cis-trans isomerism. It is also called 1, 2-dichloroethylene.

Option C is the answer.