1
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Internal energy of $$n_1$$ moles of hydrogen at temperature '$$T$$' is equal to internal energy of '$$n_2$$' moles of helium at temperature $$2 T$$, then the ratio $$\mathrm{n}_1: \mathrm{n}_2$$ is

[Degree of freedom of $$\mathrm{He}=3$$, Degree of freedom of $$\mathrm{H}_2=5$$]

A
$$5: 3$$
B
$$6: 5$$
C
$$2: 3$$
D
$$3: 5$$
2
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

For an ideal gas, $$R=\frac{2}{3} C_v$$. This suggests that the gas consists of molecules, which are [$$\mathrm{R}=$$ universal gas constant]

A
polyatomic
B
diatomic
C
monoatomic
D
a mixture of diatomic and polyatomic molecules
3
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The rms speed of a gas molecule is '$$\mathrm{V}$$' at pressure '$$\mathrm{P}$$'. If the pressure is increased by two times, then the rms speed of the gas molecule at the same temperature will be

A
$$\mathrm{V}$$
B
$$\sqrt{2} \mathrm{~V}$$
C
$$\frac{V}{3}$$
D
$$\frac{V}{2}$$
4
MHT CET 2021 23rd September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Equal volumes of two gases, having their densíties in the ratio of $$1: 16$$ exert equal pressures on the walls of two containers. The ratio of their rms speads ($$\mathrm{C}_1: \mathrm{C}_2)$$ is

A
$$1: 4$$
B
$$4: 1$$
C
$$8: 1$$
D
$$1: 8$$
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