Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 34

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Weekly Quiz Competition

Question 1
4 / -1

A closed gas cylinder is divided into two parts by a piston held tight. The pressure and volume of gas in two parts respectively are (P, 5V) and (10P, V). If now the piston is left free and the system undergoes isothermal process, then the volume of the gas in two parts respectively are

A
2V, 4V

B
3V, 3V

C
5V, V

D
4V, 2V

Solution
Question 2
4 / -1

70 calories of heat are required to raise the temperature of 2 moles of an ideal gas at constant pressure, from 30°C to 35°C. The amount of heat required to raise the temperature of same gas through the same range (30°C to 35°C) at constant volume (R = 2 cal/mol/K) is

A
30 cal

B
50 cal

C
70 cal

D
90 cal

Solution
Question 3
4 / -1

A closed compartment containing gas is moving with some acceleration in horizontal direction. Neglect effect of gravity. Then, the pressure in the compartment is

A
Same every where

B
Lower in the front side

C
Lower in the rear side

D
Lower in the upper side

Solution
Question 4
4 / -1

Consider a collection of a large number of particles each with speed v. The direction of velocity is randomly distributed in the collection. What is the magnitude of the relative velocity between a pairs in the collection?

A
2 V/π

B
V/ π

C
8V/ π

D
4V/ π

Solution
Question 5
4 / -1

Three closed vessels A, B and C are at the same temperature T and contain gases which obey the Maxwellian distribution of velocities. Vessel A contains only O₂ , B only N₂ and C a mixture of equal quantities of O₂ and N₂, If the average speed of the O₂ molecules in vessel A is V₁, that of the N₂ molecules in vessel B is V₂, the average speed of the O₂ molecules in vessel C is

A

B

C

D

Solution
Question 6
4 / -1

A gas in container A is in thermal equilibrium with another gas in container B. Both contain equal masses of the two gases in the respective containers. Which of the following can be true?

A

B

C

D

Solution
Question 7
4 / -1

Two identical glass bulbs are interconnected by a thin glass tube. A gas is filled in these bulbs at N.T.P. If one bulb is placed in ice and another bulb is placed in hot bath, then the pressure of the gas becomes 1.5 times. The temperature of hot bath will be

A
100°C

B
182°C

C
256°C

D
546°C

Solution
Question 8
4 / -1

Two containers of equal volume contain the same gas at pressures P₁ and P₂ and absolute temperatures T₁ and T₂ respectively. On joining the vessels, the gas reaches a common pressure P and common temperature T. The ratio P/T is equal to

A

B

C

D

Solution
Question 9
4 / -1

At the top of a mountain a thermometer reads 7°C and a barometer reads 70 cm of Hg. At the bottom of the mountain these read 27°C and 76 cm of Hg respectively. Comparison of density of air at the top with that of bottom is

A
75/76

B
70/76

C
76/75

D
76/70

Solution
Question 10
4 / -1

A vessel is partitioned in two equal halves by a fixed diathermic separator. Two different ideal gases are filled in left (L) and right (R) halves. The r.m.s. speed of the molecules in L part is equal to the mean speed of molecules in the R part. Then, the ratio of the mass of a molecule in L part to that of a molecule in R part is

A

B

C

D

Solution