Question

Among the following compounds, geometrical isomerism is exhibited by:

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

Answer: (A), (B)

Explanation for the correct options:

(A)

1. $1-\mathrm{chloro}\mathrm{methene},3-\mathrm{methyl}\mathrm{cyclohexane}$ can form two geometrical isomers (Cis and Trans) as they have two functional groups present on it which can form two different structures.
2. The two isomers are given as follows:

(B)

1. $1-chloromethene,3,5-dimethylcyclohexane$ can form two geometrical isomers (Cis and Trans) as they have two functional groups present on it which can form two different structures.
2. The two isomers are given as follows:

Explanation for the incorrect options:

(C)

$1-\mathrm{chloro}\mathrm{methene}\mathrm{cyclohexane}$ cannot form geometrical isomers as it does not have two functional groups on it hence, cannot have two different structures.

(D)

$1-methyl,4-chlorocyclohexane$ cannot form two geometrical isomers as it cannot form two different structures.

Hence, option A and B are correct, as these compounds can form two geometrical isomers.