Hydrogen Bonding and its Applications NEET Questions

Physical Chemistry - Chemical Bonding and Molecular Structure

Hydrogen Bonding and its Applications MCQ Questions


7.
Which property of water is a DIRECT consequence of hydrogen bonding?
A.
Ice is less dense than liquid water
B.
Water has the chemical formula H₂O
C.
Water is colourless
D.
Water is a liquid at standard temperature
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ANSWER :
A. Ice is less dense than liquid water
8.
The exceptionally high specific heat capacity of water is due to:
A.
The low boiling point of water
B.
A large amount of energy being absorbed by water to break or weaken hydrogen bonds before raising the kinetic energy of molecules
C.
The presence of strong covalent bonds in H₂O
D.
The high molar mass of water
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ANSWER :
B. A large amount of energy being absorbed by water to break or weaken hydrogen bonds before raising the kinetic energy of molecules
9.
In hydrogen bonding, the hydrogen atom acts as a bridge between two electronegative atoms. The bond between H and the electronegative atom on its left is _____ and the bond on its right is _____.
A.
Hydrogen bond; covalent
B.
Both are covalent bonds of equal strength
C.
Ionic; covalent
D.
Covalent; hydrogen bond (electrostatic)
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ANSWER :
D. Covalent; hydrogen bond (electrostatic)
10.
Which of the following statements about hydrogen bonding is INCORRECT?
A.
Hydrogen bonds are directional in nature
B.
Hydrogen bonding affects the boiling point of compounds
C.
Hydrogen bonds are stronger than van der Waals forces
D.
Hydrogen bonds are stronger than covalent bonds
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ANSWER :
D. Hydrogen bonds are stronger than covalent bonds
11.
Ammonia (NH₃) has a higher boiling point than phosphine (PH₃) because:
A.
PH₃ has more lone pairs than NH₃
B.
PH₃ has a lower molecular mass than NH₃
C.
NH₃ has stronger covalent N–H bonds than the P–H bonds in PH₃
D.
NH₃ forms hydrogen bonds while PH₃ does not, due to nitrogen's higher electronegativity and smaller size
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ANSWER :
D. NH₃ forms hydrogen bonds while PH₃ does not, due to nitrogen's higher electronegativity and smaller size
12.
Which of the following compounds CANNOT form hydrogen bonds with water?
A.
NH₃
B.
CH₃OH
C.
CH₄
D.
HF
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ANSWER :
C. CH₄