The Concept of Pressure NEET Questions

Physics - Kinetic Theory of Gases

The Concept of Pressure MCQ Questions


1.
According to the kinetic theory of gases, the pressure exerted by a gas on the walls of its container is due to:
A.
Repulsive forces between molecules
B.
Collisions with container walls
C.
Attractive forces between molecules
D.
Collisions between molecules themselves
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ANSWER :
B. Collisions with container walls
2.
What happens to the pressure of a gas if the temperature is doubled while keeping the volume constant?
A.
Remains the same
B.
Be halved
C.
Be doubled
D.
Be quadrupled
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ANSWER :
D. Be quadrupled
3.
Which of the following statements about pressure is correct?

NEET - 2016

A.
It acts in a single direction
B.
It acts perpendicular to a surface
C.
It depends only on force
D.
It is independent of the area
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ANSWER :
B. It acts perpendicular to a surface
4.
The pressure of a gas is directly proportional to its temperature at constant volume because:
A.
Increased size of gas molecules
B.
Increased collision frequency
C.
Decreased molecular speed
D.
Increased intermolecular forces
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ANSWER :
B. Increased collision frequency
5.
In the kinetic theory, pressure is mathematically expressed as P = (1/3)ĻvĀ². Here, Ļ represents:
A.
Average velocity of gas molecules
B.
Density of the gas
C.
Volume of the gas
D.
Mean free path of molecules
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ANSWER :
B. Density of the gas
6.
Pressure is defined as

NEET - 2015

A.
Force per unit area
B.
Force per unit volume
C.
Force per unit length
D.
None of these
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ANSWER :
A. Force per unit area