Q. The cumulated alkadiene is

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Solution:

(i) The alkadienes in which two double bonds are on adjacent carbon atoms are known as cumulated alkadienes.

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(ii) The alkadienes, having alternate single and double bonds are known as coniuated dienes.

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(iii) The alkadienes having two double bonds separated by more than one single bond are known as isolated dienes.

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