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Which of the following group activates t...

Which of the following group activates the benzene ring most towards electrophilic substitution

A

`-CHO`

B

`-NR_2`

C

`-NHCOCH_(3)`

D

`-NO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`-NR_(2)` is a + R group.
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ERRORLESS-HYDROCARBONS-NCERT BASED QUESTION (AROMATIC HYDROCARBON)
  1. Acylation of benzene to produce aliphatic aromatic ketones is known as

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  2. (i)Chlorobenzene and (ii) benzene hexachloride are obtained from benze...

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  3. Which of the following group activates the benzene ring most towards e...

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  4. A compound 'A' when treated with HNO(3) (in presence of H(2)SO(4)) giv...

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  5. The strongest ortho/para and the strongest meta directing groups, resp...

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  6. Chlorobenzene is o, p- directing in electrophilic substitution reacti...

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  7. , The compound B is

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  8. Best reagent for nuclear iodination of aromatic compounds is

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  9. Friedel-Crafts reaction is not given by:

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  10. Which one of the following reactions is most suitable for the preparat...

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  11. Chorination of benzene is not possible in the following reaction :

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  12. Number of resonating structures for Dewar's benzene will be

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  13. The overlapping of orbitals in benzene is of the type

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  14. Which of the following does not respond to Friedel Craft reaction

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  15. propyne on polymerisation gives

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  16. C(6)H(6)+CH(3)Cl overset(anhydrous)underset(AlCl(3))rarrC(6)H(5)CH(3)+...

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  17. Which of the following is not used in Friedel-Craft's reaction

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  18. Which of the given species cannot be used in Friedel Craft's reactions...

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  19. The compound with molecular formula C(8)H(10) which will give only two...

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  20. In which reaction , polysubstitution takes place :

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