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Which of the following molecules is leas...

Which of the following molecules is least resonance stabilised?

A

B

C

D

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The correct Answer is:
B
Aromatic compounds are resonance stabilised. Although compound (b) is also resonance stabilized but it less resonance stabilized than aromatic compounds.
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PRADEEP-ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES TECHNIQUES-Competition Focus (Jee (Main and Advanced)/Medical Entrance) I. Multiple choice Questions (With One Correct Answer)
  1. Consider thiol anion (RS^(Theta)) and alkoxy anion (RO^(Theta)). Which...

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  2. In which of the following, resonance of -NH(2) group is possible ?

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  3. Which of the following molecules is least resonance stabilised?

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  4. The most unlikely representation of resonance structure of p-nitrophen...

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  5. Among the following, the least stable resonance structure is :

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  6. Among the following structures, the one which is not resonating struct...

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  7. Which of the following carbocations is expected to be most stable ?

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  8. Hyperconjugation involves overlap of the following orbitals :

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  9. Consider the following compounds: Hyperconjugation occurs in

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

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  11. Arrangements of (CH(3))(3)C-,(CH(3))(2)CH-,CH(3).CH(2)- when attached ...

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  12. The rate of the reaction is influenced by the hyperconjugation ef...

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  13. The effect that makes 2,3-dimethyl-2-butene more stable than 2-butene ...

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  14. Hyperconjugation is most useful for stabilizing which of the following...

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  15. Consider the following carbocation: (i) Cl(3)overset(+)C (ii) Cl(2...

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  16. Which of the following cation would have greatest stability?

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  17. The correct stability order for the following species is

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  18. In which of the following compounds, the C-Cl bond ionisation shall gi...

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  19. The decreasing order of stability of the carbonium ions C(6)H(5)CH(2...

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

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