# Topic: UNIT IX: Kinetic Theory of Gases (Test 2)

Topic: UNIT IX: Kinetic Theory of Gases
Q.1
A sample of gas consists of μ1 moles of monoatomic molecules, μ2 moles of diatomic molecules and μ3 moles of linear triatomic molecules. The gas is kept at high temperature. What is the total number of degrees of freedom?
A. [3μ1 + 7( μ2 + μ3)] NA
B. [3μ1 + 7 μ2 + 6μ3] NA
C. [7μ1 + 3( μ2 + μ3)] NA
D. [3μ1 + 6( μ2 + μ3)] NA
Explaination / Solution:
No Explaination.

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Q.2
If sP and sV denote the specific heats of nitrogen gas per unit mass at constant pressure and constant volume respectively, then
A. sP - sV = 28R
B. sP - sV = R/28
C. sP - sV  = R/14
D. sP - sV = R
Explaination / Solution:
No Explaination.

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Q.3
Which of the following gases will have least rms speed at a given temperature?
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide
Explaination / Solution:
No Explaination.

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Q.4
For a given gas molecule at a fixed temperature, the area under the Maxwell-Boltzmann distribution curve is equal to
A. PV/kT
B. kT/PV
C. P/NkT
D. PV
Explaination / Solution:
No Explaination.

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Q.5
The following graph represents the pressure versus number density for ideal gas at two different temperatures T1 and T2. The graph implies
A. T1 = T2
B. T1 > T2
C. T1 < T2
D. Cannot be determined
Explaination / Solution:
No Explaination.

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