Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) NEET Questions

Organic Chemistry - Some Basic Principles of Organic Chemistry

Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) MCQ Questions


13.
Resonance structures differ in:
A.
Position of atoms
B.
Position of nuclei
C.
Position of electrons
D.
None
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ANSWER :
C. Position of electrons
14.

Which one is the most stable carbocation?

A.

CH3+

B.

CH3CH2+

C.

(CH3)2CH+

D.

(CH3)3C+

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ANSWER :

D. (CH3)3C+

15.
Which species is stabilized by resonance?
A.
Alkyl carbocation
B.
Allyl carbocation
C.
Vinyl carbocation
D.
Ethyl carbocation
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ANSWER :
B. Allyl carbocation
16.
Which effect is responsible for +M effect?
A.
Electromeric effect
B.
Resonance effect
C.
Inductive effect
D.
None
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ANSWER :
B. Resonance effect
17.

Which is an electron-donating group?

A.

–NO2

B.

–NH2

C.

–COOH

D.

–CN

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ANSWER :

B. –NH2

18.
Which of the following stabilizes a free radical?
A.
Hyperconjugation only
B.
Resonance only
C.
Both A and B
D.
None
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ANSWER :
C. Both A and B