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The compound having longest C-Cl bond is...

The compound having longest C-Cl bond is

A

B

C

D

`CH_(2)=CH-Cl`

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The correct Answer is:
B
(b): In chlorobenzene, 1-chloro-4-nitrobenzene and vinyl chloride, formation of double bond takes place between C-Cl bond due to resonance but in 4-chlorocyclohexene, no such resonance takes place, hence, C-Cl bond length is longest in this compound.
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