Chemistry Question Bank

Most stable carbocation is (a) (b) (c) (d)

CH CH CH CH HC C III II I Which of the following orders is correct for the stability of these carbanions ?

Which of the following orders is correct for no-bond- resonance energy of these radicals ?

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

Consider the following carbocations (I) Cl3C+ (II) Cl2CH+ (III) ClCH (IV) CH The stability sequence follows the order

Which of the following orders is correct for the stability of these carbanions ?

Consider the following carbocations, (I) C H CH (II) C H CH CH (III) C H CHCH (IV) C H C CH The correct sequence of the stability of these is

Which of the following statements is correct about methyl group?

Most stable carbonium ion is (a) C H (b) (CH ) C (c) (C H ) C (d) C H CH

Which of the following carbocations will be most stable? (a) Ph C (b) CH CH (c) (CH ) CH (d) CH CH CH

Rearrangement in this carbocation will produce (a) GENERAL ORGANIC CHEMISTRY (b)

Rearrangement in this carbocation will produce (a) (b)

What is the decreasing order of stability (most stable ->least stable) of the following carbocations?

Which of the following is the most stabilized carbocation? (a) (b) (c) (d)

Which carbocation is the most stabilized? (a) (b) GENERAL ORGANIC CHEMISTRY (c) (d)

Assertion: Tropylium cation is more stable than Reason: It is stabilized by both resonance effect and inductive effect.

Resonance structure of a molecules should have

Which of the following statements is true about this molecule ?

Among these compounds, which one has shortest C—Cl bond?

The stability order of these canonical structures is

GENERAL ORGANIC CHEMISTRY The most stable canonical structure among these is

The most unlikely representation of resonance structure of p–nitrophenoxide ion is: (a) (b) (c) (d)

Which of the following is least stable?

Mesomeric effect involves delocalisation of

In which of the following molecule the resonance effect is not present? (a) (b) (c) (d)