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Which of the following is electron defic...

Which of the following is electron deficient ?

A

`PH_(3)`

B

`(BH_(3))_(2)`

C

`(SiH_(3))_(2)`

D

`(CH_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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OP TANDON-BASIC PRINCIPLES OF ORGANIC COMPOUNDS (MECHANISM OF ORGANIC REACTIONS)-OBJECTIVE QUESTIONS (Level-A)
  1. Stability of overset(+)CH(2)-CH=CH(2) can be explained by:

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  2. Nucleophilic part of the reagent attacks the substrate CH(3)CH(2)COCH(...

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  3. Which of the following is electron deficient ?

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

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  5. Arrange the following in order of decreasing tendency towards S(N^(2))...

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  6. The peroxide effect in anti-Markownikoff's additon involves:

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  7. The decreasing order of strength of the bases, OH^(-), NH(2)^(-), H-C-...

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  8. Which one of the following reactions proceeds through free radical cha...

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  9. Which is the decreasing oreder of acidity in the following compounds? ...

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  10. Carbocation is a reaction intermediate in which of the following react...

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  11. The compound that does not undergo hydrolysis by S(N^(1)) mechanism is...

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  12. Which one is a nucleophilic substitution reaction among the following ...

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  13. Hypercojnugation is not possible in :

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  14. Reimer-Tiemann reaction of phenol with cholorform and aqueous alkali t...

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  15. The reaction intermediate carbenes are produced from"

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  16. In the following group : -OAc(I),-OMe(II),-OSO(2)(III),-OSO(2)CF(3)(...

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  17. ":CCl"(2) is :

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  18. In additon reactions of alkenes, the Markownikoff's rule follow:

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  19. Addition of HBr to propene in presence of peroxide (antiMarkownikoff's...

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  20. A nucleophile must have :

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