Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 64

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Weekly Quiz Competition

Question 1
4 / -1

The pressure and volume of saturated water vapour are P and V respctively. It is compressed isothermally there by volume becomes V/2, the final pressure will be

A
More than 2P

B
P

C
2P

D
4P
Question 2
4 / -1

If the intermolecular forces vanish away, the volume occupied by the molecules contained in 4.5 kg water at standard temperature and pressure will be

A
5.6 m³

B
4.5 m³

C
11.2 litre

D
11.2 m³

Solution
Question 3
4 / -1

A horizontal uniform glass tube of 100 cm, length sealed at both ends contain 10 cm mercury column in the middle. The temperature and pressure of air on either side of mercury column are respectively. 81°C and 76 cm of mercury. If the air column at one end is kept at 0°C and the other end at 273°C, the pressure of air which is at 0°C is (in cm of Hg)

A
76

B
68.2

C
102.4

D
122

Solution
Question 4
4 / -1

The diameter of oxygen atom is 3Å. The fraction of molecular volume to the actual volume occupied by oxygen at STP is

A
6 × 10^–28

B
8 × 10^–4

C
4 × 10^–10

D
4 × 10^–4

Solution
Question 5
4 / -1

The temperature of 5 moles of a gas which was held at constant volume was changed from 100°C to 120°C. The change in internal energy was found to be 80 Joules. The total heat capacity of the gas at constantvolume will be equal to

A
8 J/K

B
0.8 J/K

C
4.0 J/K

D
0.4 J/K

Solution
Question 6
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 7
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 amass 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
1/4

B
1/3

C
1/2

D
2/3

Solution
Question 8
4 / -1

The diameter of oxygen molecule is 2.94 × 10^–10m. 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 9
4 / -1

The temperature of the mixture of one mole of helium and one mole of hydrogen is increased from 0°C to 100°C at constant pressure. The amount of heat delivered will be

A
600 cal

B
1200 cal

C
1800 cal

D
3600 cal

Solution
Question 10
4 / -1

A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300 K. The ratio of the average rotational kinetic energy per O₂ molecule to that per N₂molecule is

A
1 : 1

B
1 : 2

C
2 : 1

D
Depends on the moment of inertia of the two molecules

Solution