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An organic compound has five C=C bonds. ...

An organic compound has five `C=C` bonds. Heat of hydrogenation of `C=C` bond is 28.6 Kcals. Experimental value of heat of hydrogenation is 98 Kcals. Resonance energy is

A

45

B

90

C

70

D

140

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BRILLIANT PUBLICATION-ORGANIC CHEMISTRY: BASIC PRINCIPLES - PART II (REACTION MECHANISM)-LEVEL -II
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  3. An organic compound has five C=C bonds. Heat of hydrogenation of C=C b...

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  4. Which among the following statements are true with respect to electron...

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  6. Which among the following statements is false?

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  7. Consider the following bonds I) C = C II) C - H III) C- C IV) C = C...

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  8. The C-C single bond length in propene is less than 1.54 A^@. This shri...

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  9. Which among the following compounds is most stable?

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  10. Alkyl groups are orthopara directing because of

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  11. In given carbocation positive charge can be obtained at how many more ...

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  12. Which of the following statements are correct?

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  13. Which one of the following carbocation is most stable?

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  14. Which carbocation is more stable?

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  15. The carbon-chlorine bond length is shortest in

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  16. Which of the following carbocation is least stable?

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  17. In which of the following pairs the second member is more stable than ...

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  18. Arrange the following In the increasing order of stability

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  19. Which of the following free radical is most stable?

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  20. The stability order of the following carbocations is

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