Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 69

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Weekly Quiz Competition

Question 1
4 / -1

Suppose ideal gas equation follows VP³ = constant. Initial temperature and volume of the gas are T and V respectively. If gas expands to 27V then its temperature will become

A
T

B
9T

C
27 T

D
T/9

Solution
Question 2
4 / -1

When the temperature of a gas is raised from 27°C to 90°C, the percentage increase in the r.m.s. velocity of the molecules will be

A
10%

B
15%

C
20%

D
17.5%

Solution
Question 3
4 / -1

A
1 × 10^–3 m³

B
2 × 10^–3 m³

C
3 × 10^–3 m³

D
4 × 10^–3 m³

Solution
Question 4
4 / -1

Two spherical vessel of equal volume, are connected by a narrow tube. The apparatus contains an ideal gas at one atmosphere and 300K. Now if one vessel is immersed in a bath of constant temperature 600K and the other in a bath of constant temperature 300K. Then the common pressure will be

A
1 atm

B
4/5atm

C
4/3atm

D
3/4atm

Solution
Question 5
4 / -1

The r.m.s velocity of a gas at a certain temperature is √2 times than that of the oxygen molecules at that temperature. The gas can be

A
H₂

B
He

C
CH₄

D
SO₂

Solution
Question 6
4 / -1

At what temperature, the mean kinetic energy of O₂will be the same for H₂ molecules at –73 °C

A
127°

B
527°C

C
–73° C

D
–173° C
Question 7
4 / -1

The volume of a gas at pressure 21 × 10⁴ N/m² andtemperature 27°C is 83 litres. If R = 8.3 J/mol K, then the quantity of gas in g-mole will be

A
15

B
42

C
7

D
14

Solution
Question 8
4 / -1

The pressure and temperature of an ideal gas in a closed vessel are 720 kPa and 40°C respectively. If 1/4thof the gas is released from the vessel and the temperature of the remaining gas is raised to 353°C, thefinal pressure of the gas is

A
1440 kPa

B
1080 kPa

C
720 kPa

D
540 kPa

Solution
Question 9
4 / -1

An air bubble doubles its radius on raising from the bottom of water reservoir to be the surface of water in it. If the atmospheric pressure is equal to 10 m of water, the height of water in the reservoir is

A
10 m

B
20 m

C
70 m

D
80 m

Solution
Question 10
4 / -1

It the r.m.s velocity of a gas at a given temperature (Kelvin scale) is 300 m/s. What will be the r.m.s velocity of a gas having twice the molecular weight and half the temperature on Kelvin scale =

A
300 m/s

B
600 m/s

C
75 m/s

D
150 m/s

Solution