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Q.
$ CH_{2}=CHCH_{2}CH=CH_{2} $ represents a/an
Uttarkhand PMTUttarkhand PMT 2009
Solution:
In conjugated system, double bonds are present at alternate positions, in cumulative system, double bonds are present at adjacent positions while in isolated system, there is a large difference, between the positions of double bond.
Hence, $ CH_{2}=CH-CH_{2}-CH=CH_{2} $ represents an isolated system.