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Among the following carbocations : (I)...

Among the following carbocations :
(I) `Ph_(2)overset(+)"C"CH_(2)Me (II) PhCH_(2)CH_(2)overset(+)"C"HPh`
`"(III) "Ph_(2)CHoverset(+)"C"HMe" (IV) "Ph_(2)C(Me)overset(+)"C"H_(2)` the order of stability is :

A

`IVgtIIgtIgtIII`

B

`IgtIIgtIIIgtIV`

C

`IIgtIgtIVgtIII`

D

`IgtIVgtIIIgtII`

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. Which of the following acids has the smallest dissociation constant?

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  2. H(3)C-underset(D)underset(|)CH-underset(CH(3))underset(|)(C)H(3)+Br^(*...

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  3. Among the following carbocations : (I) Ph(2)overset(+)"C"CH(2)Me (II...

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  4. Which one of the following characteristics belongs to an electrophile?

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  5. Carbocation as an intermediate is likely to be formed in the reaction ...

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  6. Which of the following pK(a) values, represents the strongest acid?

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  7. Which of the following orders regarding relative stability of free rad...

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  8. Which of the following is the strongest base?

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  9. Which of the following is least reactive in a nucleophilic substitutio...

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  10. In the compound given below: the correct order of acidity of the posit...

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  11. Due to the presence of an unpaired electron, free radicals are:

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  12. Among the following the strongest nucleophilic is

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  13. Which one of the following is most reactive towards nucleophilic subst...

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  14. Strength of acidity is in order:

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  15. Which is most stable carbocation?

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  16. Which of the following undergoes nucleophilic substitution exclusively...

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  17. In the S(N^(1)) reaction on chiral centres there is :

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  18. Which one of the following halogen compounds is difficult to be hydrol...

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  19. The stability of Me(2)C=CH(2) is more than that of MeCH(2)CH=CH(2) due...

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  20. CH(3)Br+Nu^(-)rarrCH(3)Nu+Br^(-) The decreasing order of the rate of...

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