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The electrophile, E^((o+)) attacks the b...

The electrophile, `E^((o+))` attacks the benzene ring to generate the intermediate `sigma`-complex. Of the following which `sigma`-complex is of lowest energy?

A

B

C

D

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The correct Answer is:
C
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OP TANDON-BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)-OBJECTIVE QUESTIONS (Level-A)
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  3. The electrophile, E^((o+)) attacks the benzene ring to generate the in...

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  4. Which one of the following carbanions is the least stable?

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  5. CH(3)CH(2)Cl undergoes homolytic fission produces:

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  6. Tertiary butyl chloride preferably undergo hydrolysis by:

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  7. In a S(N^(2)) substitution reaction of the type R-Br+Cl^(-)overset("...

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  8. The correct stability order for the following speceis is :

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  9. Arrange the carbanions, (CH(3))(3)bar(C),bar(C)Cl(3),(CH(3))(2)bar(C)H...

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  10. Which of the following carbocations will be more stable?

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  11. Arrange the following free radicals in order of decreasing stability: ...

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  12. The most easily hydrolysed molecule under S(N^(1)) condition is:

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  13. Least active electrophile is :

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  14. In the following carbocation, H//CH(3) that is most likely to migrate ...

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  15. Arrange the following resonating structures in order of increasing sta...

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  16. Identify a species which is not a Bronsted acid but a Lewis acid:

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  17. A solution of (-l)- chloro -1 phenyletane in toluene recemises slowly ...

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  19. The hyperconjugative stabilities of tert-butyl cation and 2-butene, re...

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