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How many pi electron are there in the fo...

How many `pi` electron are there in the following species?

A

2

B

4

C

6

D

8

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BRILLIANT PUBLICATION-ORGANIC CHEMISTRY: BASIC PRINCIPLES - PART II (REACTION MECHANISM)-LEVEL -II
  1. How many pi electron are there in the following species?

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  2. Which of the following represents functional isomerism?

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  3. Of the isomeric hexanes the isomers that give the minimum and maximum ...

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  4. Which of the following are tautomers?

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  5. The type of isomerism exhibited by the compound with M.F. C4 H(10)O ar...

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  6. Which of the following compounds will show nitro -acinitro tautomerism...

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  7. Maximum number of isomers including stereoisomers possible on monochlo...

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  8. The total number of carbocations for the formula C4 H(9)^(+) ?

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  9. What type of isomerism is exhibited by the following pairs? CH3 - ov...

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  10. Vinyl alcohol and acetaldehyde are

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  11. Which group has maximum -I effect?

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  12. Which of the following acids has the lowest value of dissociation cons...

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  13. Among the acids given below CH3 - CH2 - COOH -A CH2 = CH - COOH -B...

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  14. In 1, 3-butadiene the single bond length between C2 and C3 is

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  15. An organic compound has five C=C bonds. Heat of hydrogenation of C=C b...

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

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  17. The correct order of increasing basic nature of the following bases is

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  18. Which among the following statements is false?

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

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

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  21. Which among the following compounds is most stable?

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