MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryHydrocarbonsPrevious Year Questions
CH CH – CH – CH CH represents a/an (AFMC 2009)
A.conjugated system
B.cumulative system
C.isolated system✓ Correct
D.All of these
Explanation
Conjugated double bonds mean alternate double bonds are present whereas cumulative double bonds mean atleast three contiguous carbon atoms are attached by double bonds. But in the given compound 2 2 2 CH CH CH CH CH it is neither conjugated nor cumulative. Thus, it is an isolated system. Hence, the correct option is (c).
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