Kinetic Theory of Gases Test

Result

Kinetic Theory of Gases Test - 12

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Weekly Quiz Competition

Question 1
4 / -1

Root mean square velocity of a molecule is v at pressure P. If pressure is increased two times, then the rms velocity becomes

A
3v

B
2v

C
0.5v

D
v
Question 2
4 / -1

The rms. speed of the molecules of a gas in a vessel is 400 ms^–1. If half of the gas leaks out, at constant temperature, the r.m.s speed of the remaining molecules will be

A
800 ms^–1

B
200 ms^–1

C
400√2 ms^–1

D
400 ms^–1
Question 3
4 / -1

The degrees of freedom for triatomic gas is ______ (At room temperature)

A
8

B
6

C
4

D
2
Question 4
4 / -1

A
Diatomic

B
monoatomic

C
polyatomic

D
mixture of diatomic and polyatomic molecules

Solution
Question 5
4 / -1

The specific heats at constant pressure is greater than that of the same gas at constant volume because

A
At constant volume work is done in expanding the gas

B
At constant pressure work is done in expanding the gas

C
The molecular vibration increases more at constant pressure

D
The molecular attraction increases more at constant pressure
Question 6
4 / -1

For a gas γ = 7/5, the gas may probably be

A
Neon

B
Argon

C
Helium

D
Hydrogen

Solution
Question 7
4 / -1

A
If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B
If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

C
If Assertion is true; the Reason is false.

D
If Assertion is false, but the reason is true.
Question 8
4 / -1

Assertion : Mean free path of gas varies inversely as density of the gas.
Reason : Mean free path varies inversely as pressure of the gas.

A
If both Assertion and Reason are true and the Reason is correct explanation of the Assertion

B
If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion

C
If Assertion is true; the Reason is false

D
If Assertion is false, but the reason is true
Question 9
4 / -1

Three perfect gases at absolute temperatures T₁, T₂ and T₃ are mixed. The masses of molecules are m₁, m₂ and m₃ and the number of molecules are n₁, n₂ and n₃ respectively. Assuming no loss of energy, the final temperature of the mixture is

A

B

C

D

Solution
Question 10
4 / -1

The temperature of an ideal gas at atmospheric pressure is 300 K and volume 1 m³. If temperature and volume become double, then pressure will be

A

B

C

D

Solution