Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 43

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Weekly Quiz Competition

Question 1
4 / -1

Certain amount of an ideal gas is contained in a closed vessel. The vessel is moving with a constant velocity v. The molecular mass of gas is M. The rise in temperature of the gas when the vessel is suddenly stopped is (γ = C_P/C_V)

A

B

C

D

Solution
Question 2
4 / -1

Air is filled at 60°C in a vessel of open mouth. The vessel is heated to a temperature T so that 1/4 th part of air escapes. Assuming the volume of the vessel remaining constant, the value of T is

A
80°C

B
444°C

C
333°C

D
171°C

Solution
Question 3
4 / -1

The average momentum of a molecule in an ideal gas depends on

A
Temperature

B
Volume

C
Molecular mass

D
None of these
Question 4
4 / -1

Mean free path of gas molecules of constant temperature is inversely proportional to

A
P

B
V

C
m

D
n (number density)
Question 5
4 / -1

The temperature of a gas at pressure P and volume V is 27°C. Keeping its volume constant if its temperature is raised to 927°C, then its pressure will be

A
2 P

B
3 P

C
4 P

D
6 P

Solution
Question 6
4 / -1

Boyle\'s law holds for an ideal gas during

A
Isobaric changes

B
Isothermal changes

C
Isochoric changes

D
Isotonic changes
Question 7
4 / -1

S.I. unit of universal gas constant is

A
cal/°C

B
J/mol

C
J mol^–1K^–1

D
J/kg
Question 8
4 / -1

Figure shows two flasks connected to each other. The volume of the flask 1 is twice that of flask 2. The system is filled with an ideal gas at temperature 100 K and 200 K respectively. If the mass of the gas in 1 be m, then what is the mass of the gas in flask 2?

A
m

B
m/2

C
m/4

D
m/8

Solution
Question 9
4 / -1

At constant pressure, the ratio of increase in volume of an ideal gas per degree rise in kelvin temperature to it\'s original volume is (T = Absolute temperature of the gas)

A
T²

B
T

C
1/T

D
1/T²

Solution
Question 10
4 / -1

The volume of gas at 20°C is 200 ml. If the temperature is reduced to –20°C at constant pressure, its volume will be

A
172.6 ml

B
17.26 ml

C
192.7 ml

D
19.27 ml

Solution