Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 36

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Weekly Quiz Competition

Question 1
4 / -1

The temperature of which the r.m.s. speed of hydrogen molecules is equal to escape velocity on earth surface, will be

A
1060 K

B
5030 K

C
8270 K

D
10063 K

Solution
Question 2
4 / -1

Inside a cylinder having insulating walls and closed at ends is a movable piston, which divides the cylinder into two compartments. On one side of the piston is a mass m of a gas and on the other side a mass 2 m of the same gas. What fraction of volume of the cylinder will be occupied by the larger mass of the gas when the piston is in equilibrium? Consider that the movable piston is conducting so that the temperature is the same throughout

A

B

C

D

Solution
Question 3
4 / -1

The diameter of oxygen molecule is 2.94 × 10^–10 m. The van der Waal\'s gas constant ‘b’ in m³/mol will be

A
3.2

B
16

C
32 × 10^–4

D
32 × 10^–6

Solution
Question 4
4 / -1

A vessel contains 14g (7 moles) of hydrogen and 96 g (9 moles) of oxygen at S.T.P. Chemical reaction is induced by passing electric spark in the vessel till one of the gases is consumed. The temperature is brought back to it\'s starting value 273 K. The pressure in the vessel is

A
0.1 atm

B
0.2 atm

C
0.3 atm

D
0.4 atm

Solution
Question 5
4 / -1

A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

A
4 RT

B
15 RT

C
9 RT

D
11 RT

Solution
Question 6
4 / -1

A jar contains a gas and few drops of water at T K. The pressure in the jar is 830 mm of mercury. The temperature of jar is reduced by 1%. The saturated vapour pressure of water at the two temperatures are 30 mm and 25 mm of mercury. Then, the new pressure in the jar will be

A
917 mm of Hg

B
717 mm of Hg

C
817 mm of Hg

D
None of these

Solution
Question 7
4 / -1

The expansion of an ideal gas of mass m at a constant pressure P is given by the straight line D. Then, the expansion of the same ideal gas of mass 2m at a pressure P/2 is given by the straight line

A
E

B
C

C
B

D
A

Solution
Question 8
4 / -1

A
Curve A

B
Curve B

C
Curve C

D
Curve D

Solution
Question 9
4 / -1

The graph which represents the variation of mean kinetic energy of molecules with temperature t^oC is

A

B

C

D

Solution
Question 10
4 / -1

The adjoining figure shows graph of pressure and volume of a gas at two temperatures T₁ and T₂. Which of the following inference is correct?

A
T₁ > T₂

B
T₁ = T₂

C
T₁ < T₂

D
No interference can be drawn

Solution