A) rotation around \[{{C}_{2}}{{C}_{3}}\] double bond
B) rotation around \[{{C}_{3}}{{C}_{4}}\] sigma bond
C) rotation around \[{{C}_{1}}{{C}_{2}}\] bond
D) restricted rotation around \[>C=C<\] bond
Correct Answer: D
Solution :
[d] Due to presence of
in butene-2, it shows restricted rotation. Hence, give two types of arrangements around the space of as cis and trans forms.
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