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

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

Text Solution

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The correct Answer is:
C
In all other structures, electron withdrawing `-NO_(2)` group is present which intensifies the positive charge and destabilises the structures.
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MODERN PUBLICATION-HYDROCARBONS-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (MULTIPLE CHOICE QUESTIONS from competitive examinations (JEE (Main) and Other State Boards. Engineering Entrance))
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  3. The electrophile, E^(o+) attacks the benzene ring to generate the inte...

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  4. The hydrocarbon which can react with sodium in liquid ammonia is

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  5. The treatment of CH(3)MgX with CH(3)-C-=C-H produces

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  6. In which of the following species, all the three types of hybrid carbo...

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  7. aqueous solution of sodium succinate are electrolysed using Pt-electro...

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  8. The Z-isomers among the following are:

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  9. When 3-phenylpropene reacts with HBr in the presence of peroxide, the ...

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  10. Ozonolysis of an organic compound gives formaldehyde as one of the pro...

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  11. The non aromatic compound among the following is -

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  12. The IUPAC name of

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  13. The number of sigma (sigma) and pi (pi) bonds present in 1,3,5,7-octat...

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  14. When HBr adds on hex-1-ene in the presence of benzoyl peroxide, the pr...

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  15. 2-Hexyne gives trans -2- hexene on treatment with :

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  16. An optically active compound having molecular formula C(8)H(16) on ozo...

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  17. The correct order of decreasing H-C-H bond angle in the following mole...

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  18. n- C(7)H(16) underset(10-20 "atm.")overset(V(2)O(5), 500^(@)C)to A ove...

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  19. The products obtained by the ozonolysis of 2-ethyl but-1-ene are:

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  20. When but-2-yne is treated with Na in liquid ammonia:

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