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The resonance stability is minimum for t...

The resonance stability is minimum for the compound-

A

B

C

D

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The correct Answer is:
B
Among the given compounds , (B) non - aromatic, thus its stability is the least.
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CHHAYA PUBLICATION-ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES -ENTRANCE QUESTION BANK
  1. Which of the following compounds will exhibit geometrical isomersim-

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  2. The increasing order of S(N)1 reactivity of the following compounds is...

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  3. The resonance stability is minimum for the compound-

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  4. Which of the following compounds will be suitable for Kjedahl's method...

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  5. The increasing order of basicity of the following compounds is-

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  6. Consider the reactions: (i) (CH(3))(2)CH-CH(2)Broverset(C(2)H(5)OH)to(...

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  7. Which undergoes nucleophilic substitution most easily-

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  8. IUPAC name of the compound,

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  9. Considering the state of hybridisation of C - atoms, which one among t...

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  10. Which is a nucleophilic substitution reaction-

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  11. Which is most reactive towards an electrophilic reagent-

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  12. The correct order or increasing bond length C - H , C - O , C - C and ...

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  13. RCHO+NH(2)NH(2)toRCH=N-NH(2) What sort of reaction is it-

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  14. Which of the following acids do not exhibit optical isomerism-

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  15. The correct order of decreasing acid strenght of trichloroacetic acid ...

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  16. Which nomeclature is not according to IUPAC system-

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  17. Stucture of the compound whose IUPAC name is 3 - ethyl - 2 - hydroxy -...

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  18. Structure of isobutyl group in an organic compound is-

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  19. The order of stability of the following tautomeric forms is-

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  20. Which of the following compounds will undergo racemisation when soluti...

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