question_answer

IUPAC name of the compound \[\text{C}{{\text{H}}_{\text{3}}}-\text{C}{{\text{H}}_{\text{2}}}-\overset{\begin{smallmatrix}  \text{C} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,{{\text{H}}_{\text{2}}}-\overset{\begin{smallmatrix}  \text{C} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}\]

A)  3-eAyl-2- methyl buta-1, 3-diene

B)  2-ethyl-3-methyl buta- 1,3-diene

C)  2,3-dimethylidene pentane

D)  2-methyl-3-methylidenepent-l-ene

Correct Answer: B

Solution :

2-ethyl-3-methyl buta-1, 3-diene