Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 24

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Weekly Quiz Competition

Question 1
4 / -1

At which temperature the velocity of O₂ molecules will be equal to the velocity of N₂ molecules at 0°C

A
40°C

B
93°C

C
39° C

D
Cannot be calculated

Solution
Question 2
4 / -1

If mass of He atom is 4 times that of hydrogen atom then mean velocity of He is

A
2 times of H-mean value

B
1/2 times of H-means value

C
4 times of H-mean value

D
Same as H-mean value

Solution
Question 3
4 / -1

The temperature of an ideal gas is increased from 27°C to 927°C. The root mean square speed of its molecules becomes

A
Twice

B
Half

C
Four times

D
One-fourth

Solution
Question 4
4 / -1

According to the kinetic theory of gases the r.m.s. velocity of gas molecules is directly proportional to

A
T

B

C
T²

D

Solution
Question 5
4 / -1

At what temperature the molecules of nitrogen will have the same r.m.s. velocity as the molecules of oxygen at 127°C

A
77°C

B
350°C

C
273°C

D
457°C

Solution
Question 6
4 / -1

r.m.s. velocity of nitrogen molecules at NTP is

A
492 m/s

B
517 m/s

C
546 m/s

D
33 m/s

Solution
Question 7
4 / -1

The temperature of the hydrogen at which the average speed of its molecules is equal to that of oxygen molecules at a temperature of 31°C, is

A
–216°C

B
–235°C

C
–254°C

D
–264°C

Solution
Question 8
4 / -1

The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square velocity of the gas molecules is v, at 480 K it becomes

A
4v

B
2v

C
v/2

D
v/4

Solution
Question 9
4 / -1

Root mean square velocity of a particle is v at pressure P. If pressure is increased two times, then the r.m.s. velocity becomes

A
2v

B
3v

C
0.5v

D
v
Question 10
4 / -1

The root mean square speed of the molecules of a gas is

A
Independent of its pressure but directly proportional to its Kelvin temperature

B
Directly proportional to the square roots of both its pressure and its Kelvin temperature

C
Independent of its pressure but directly proportional to the square root of its Kelvin temperature

D
Directly proportional to both its pressure and its Kelvin temperature

Solution