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


1.
Homolytic fission of a bond gives
A.
Carbocation
B.
Free radicals
C.
Carbanion
D.
Electrophile
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ANSWER :
B. Free radicals
2.
In heterolytic bond fission, the shared electron pair goes to
A.
More electronegative atom
B.
Less electronegative atom
C.
Carbon atom
D.
Hydrogen atom
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ANSWER :
A. More electronegative atom
3.
Free radical is a species having
A.
Positive charge
B.
Negative charge
C.
An odd electron
D.
A pair of electrons
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ANSWER :
C. An odd electron
4.

Which is the most stable carbocation?

NEET - 2020

A.

CH3CH2+

B.

CH2=CH+

C.

CH3C+=CH2

D.

(CH3)3C+

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ANSWER :

D. (CH3)3C+

5.
Free radical is formed by
A.
Heterolytic fission
B.
Oxidation
C.
Homolytic fission
D.
None of these
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ANSWER :
C. Homolytic fission
6.
The intermediate formed in free radical substitution is
A.
Carbocation
B.
Carbanion
C.
Free radical
D.
None of these
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ANSWER :
C. Free radical