RMS Speed of Gas Molecules NEET Questions

Physics - Kinetic Theory of Gases

RMS Speed of Gas Molecules MCQ Questions


13.
The RMS speed of a gas molecule depends on:
A.
Only the pressure
B.
Only the volume
C.
Only the temperature
D.
Temperature and molar mass
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ANSWER :
D. Temperature and molar mass
14.
Which gas will have the lowest RMS speed at the same temperature?
A.
Helium (He)
B.
Neon (Ne)
C.
Argon (Ar)
D.
Krypton (Kr)
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ANSWER :
D. Krypton (Kr)
15.
If the RMS speed of hydrogen molecules is 4 times that of oxygen molecules, what is the temperature ratio
A.
1:4
B.
4:1
C.
2:1
D.
1:2
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ANSWER :
B. 4:1
16.
What is the relation between RMS speed and molar mass of a gas?
A.
Directly proportional to molar mass
B.
Inversely proportional to molar mass
C.
Independent of molar mass
D.
Inversely proportional to temperature
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ANSWER :
B. Inversely proportional to molar mass
17.
How does the RMS speed change if the absolute temperature is tripled?
A.
It remains the same
B.
It doubles
C.
It triples
D.
It halves
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ANSWER :
B. It doubles
18.
What happens to the RMS speed if the temperature is increased from 100 K to 400 K?
A.
It remains the same
B.
It is doubled
C.
It is tripled
D.
It is quadrupled
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ANSWER :
D. It is quadrupled