Gaseous State Test

Result

Gaseous State Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

In Vander Waals equation of state of the gas law, the constant ‘b’ is a measure of

A
intermolecular repulsions

B
intermolecular collisions per unit volume

C
Volume occupied by the molecules

D
intermolecular attraction

Solution

In Vander Waals equation ‘b’ is the excluded volume i.e. the volume occupied by the molecules
Question 2
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Which of the following differentiate between diffusion and effusion?

A
Diffusion is the intermixing of the gas molecules at any direction effusion is the reverse of diffusion

B
Diffusion is the property of the gas molecules effusion is the property of the gas container only

C
Diffusion occur at any direction whereas effusion occur in under the potential difference

D
Diffusion is the intermixing of the gas molecules whereas effusion is the passage of gas molecules through the pores in one direction

Solution

Diffusion is the ability of gas to mix spontaneously and to form a homogenous mixture while effusion is a process in which a gas under pressure escapes out from a fine hoke in one direction
Question 3
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Which of the following is true at the critical point?

A
At the critical point three roots of vanderwaals equation are equal

B
Below the critical point two roots of the vanderwaals equation are equal and imaginary but one root is real

C
Above the critical point density of gas is greater than density of liquid

D
Above the critical point three roots of vanderwaals equation are real but unequal

Solution

At the critical point three roots of the van der woal equation are equal