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9. Hydricarbon — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry9. Hydricarbon1 Mark
MCQ
Select the true statement about benzene from amongst the following
  • A
    Because of unsaturation benzene easily undergoes addition reactions
  • B
    There are two types of $C - C$ bonds in benzene molecule
  • ✓
    There is a cyclic delocalisation of $\pi $ electrons in benzene
  • D
    Monosubstitution of benzene group gives three isomeric substances
✓

Answer

Correct option: C.
There is a cyclic delocalisation of $\pi $ electrons in benzene
c
In benzene molecule,all $C - C$ bond length are equal,it does not give addition product but there is a cyclic delocalisation of $\pi$ bonds in benzene ring Mono substitution of benzene gives single isomeric product.

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