Covalent Bonding (Concept of Electronegativity. Fajan’s Rule, Dipole Moment) NEET Questions

Physical Chemistry - Chemical Bonding and Molecular Structure

Covalent Bonding (Concept of Electronegativity. Fajan’s Rule, Dipole Moment) MCQ Questions


7.
The most electronegative element is:
A.
Fluorine
B.
Oxygen
C.
Nitrogen
D.
Chlorine
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ANSWER :
A. Fluorine
8.
Which has the highest electronegativity?
A.
H
B.
Cl
C.
C
D.
F
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ANSWER :
D. F
9.
The molecule with highest electronegativity difference between bonded atoms is:

NEET - 2016

A.
HCl
B.
HF
C.
CO₂
D.
NH₃
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ANSWER :
B. HF
10.
As electronegativity difference increases, the covalent bond becomes more:
A.
Metallic
B.
Polar
C.
Ionic
D.
Non-polar
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ANSWER :
B. Polar
11.
In F₂ molecule, the bond is:
A.
Non-polar covalent
B.
Ionic
C.
Polar covalent
D.
Coordinate bond
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ANSWER :
A. Non-polar covalent
12.
Which of the following molecules has a dipole moment?
A.
CO₂
B.
CH₄
C.
BF₃
D.
H₂O
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ANSWER :
D. H₂O