question_answer

The \[cis\] and trails isomers are represented by:

A)  pent-1-ene       

B)  but-2-ene

C)  prop-1-ene       

D)         but-1-ene

Correct Answer: B

Solution :

The isomer in which same group are present on same side is \[cis-\]isomer. The same groups are present on different side is irons isomer. It is only represented by bute-2-ene.                 \[\underset{But-2-ene}{\mathop{C{{H}_{3}}CH=Ch-C{{H}_{3}}}}\,\] \[cis-\]terms isomerism.