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Which of the following compounds is arom...

Which of the following compounds is aromatic?

A

B

C

D

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The correct Answer is:
A, B, D
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Which of the following compound is non aromatic?

Pyridine like benzene, has six pi -electrons in delocalized pi -orbitals, but unlike benzene the orbitals will be deformed as electrons are more attracted towards the nitrogen atom because of its high electro negativity. This is reflected in the dipole of pyridine which has the negative end on N and the positive end on the nucleus. We can compare the respective properties of benzene, pyridine, pyrrole, furan and thiophene, which very frequently give aromatic electrophilic and nucleophilic substitution reactions in different positions. Which of the following compounds are aromatic.

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AAKASH SERIES-ELECTRONIC EFFECTS AND REACTION INTERMEDIATES-ADDITIONAL PRACTICE EXERCISE (LEVEL - II LECTURE SHEET (ADVANCED) Straight ObjectiveType Questions)
  1. Which one of the following is least basic in character?

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  2. Select the least basic compound.

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  3. Basicity order of N in the following compound is :

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  4. Consider the following base (I) o-nitroaniline" " (II) m-nitroanil...

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  5. Select the most basic compound.

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  6. Which one of the following molecules has all the effects, namely induc...

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  7. Hyperconjugation is best described as:

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  8. Select the correct statement. (i) Delocalisation of sigma-electron i...

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  9. Arrange the following compounds in decreasing order of electrophilic s...

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  10. Resonance energy of benzene is

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  11. In which of the following pairs IInd compound has higher resonance ene...

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  12. In which of the following pairs IInd compound has less resonance energ...

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  13. Identify electron - withdrawing groups in resonance among the followin...

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  14. Which of the following groups can neither donate a pair of electrons i...

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  15. Which of the following group can participate in resonance with other s...

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  16. Which one of the following pairs of structures represent the phenomeno...

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  17. In which of the following pairs IInd compound has less resonance energ...

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  18. In which of the following is (are) the correct order of bond lengths :

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  19. Select the correct statement about product A.

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  20. Which of the following compounds is aromatic?

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