Covalent Bond Fission -Homolytic and Heterolytic, Free Radicals, Carbocations and Carbanions,... NEET Questions

Organic Chemistry - Some Basic Principles of Organic Chemistry

Covalent Bond Fission -Homolytic and Heterolytic, Free Radicals, Carbocations and Carbanions,... MCQ Questions


13.

Which one is an electrophile?

A.

NH3

B.

Cl-

C.

NO2+

D.

OH-

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ANSWER :

C. NO2+

14.
Electrophiles are
A.
Electron donors
B.
Electron deficient species
C.
Free radicals
D.
Nucleophilic reagents
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ANSWER :
B. Electron deficient species
15.
Nucleophiles are
A.
Electron deficient
B.
Electron rich
C.
Always neutral
D.
Proton donors
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ANSWER :
B. Electron rich
16.
The fission that forms ions is called
A.
Substitution
B.
Elimination
C.
Heterolytic
D.
Homolytic
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ANSWER :
C. Heterolytic
17.

Which species is most stable?

A.

CH3+

B.

(CH3)2CH+

C.

(CH3)3C+

D.

C2H5+

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ANSWER :

C. (CH3)3C+

18.
Stability of free radicals is influenced by
A.
Inductive effect
B.
Resonance effect
C.
Hyperconjugation
D.
All of the above
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ANSWER :
D. All of the above