A) conjugated diene
B) cumulative diene
C) isolated diene
D) None of these
Correct Answer: B
Solution :
When two double bonds are present on adjacent carbon atoms, the diene is called cumulative diene. Allene\[({{C}_{3}}{{H}_{4}})\]is the simplest example of cumulative diene. \[\underset{allene}{\mathop{{{H}_{2}}C=C=C{{H}_{2}}}}\,\]
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