MEDIUM
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Which one of the following does not exhibit electromeric effect?
(a)Aldehydes
(b)Ketones
(c)Alkenes
(d)Ethers

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques
EASY
Which of the following alkyl groups shows least positive inductive effect?

EASY
The most acidic proton and the strongest nucleophilic nitrogen in the following compound
respectively, are

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The higher stabilities of tert-butyl cation over isopropyl cation and trans-- butene over propene, respectively, are due to orbital interactions involving

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Among the given species the Resonance stabilised carbocations are:

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The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, due to

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Given below are two statements :
Statement I : Hyperconjugation is a permanent effect.
Statement II : Hyperconjugation in ethyl cation involves the overlapping of bond with empty orbital of other carbon.
Choose the correct option:

EASY
The chlorine atom of the following compound
that reacts most readily with to give a precipitate is

HARD
Number of electrophillic centres in the given compound is___

EASY
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?

MEDIUM
Which of the following represents the hyperconjugation effect?

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Which one among the following resonating structures is not correct?

EASY
In pyrrole, the electron density is maximum on


EASY
The order of stability of the following alkenes with the first being the most stable and last being the least stable is
(i)
(ii)
(iii)
(iv)

EASY
Which of the following compound is the most basic?

HARD
Identify the product of the following reaction.

MEDIUM
Which of the following carbocations is expected to be the most stable?

EASY
Which of the following is correct with respect to effect of the substituent? (alkyl group)

MEDIUM
The ease of hydrolysis in the compounds and is of the order

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Which of the following molecules is least resonance stabilized?

EASY
Consider the following compounds

Hyperconjugation occurs in:

