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This mock test of Test: Properties of Gases - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam.
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QUESTION: 1

The equation is known as

Solution:

The equation is know n as Van der Waal’s equation

where,

= Forces of cohesion

b = Co-volume

QUESTION: 2

Which of the following conditions are favourable for liquefaction of a gas?

Solution:

As T_{r} < 1, the gas becomes liquified and during phase transition isotherms are vertical. The minima of all these isotherms lie in the liquid zone

QUESTION: 3

If value of n is zero in a polytropic process PV^{n} = C, then the process is known as constant

Solution:

If n = 0, process is known as isobaric process

QUESTION: 4

For an ideal gas the value of Joule Thomson coefficient is

Solution:

When an ideal gas is made to undergo throttling process, there is no change in temperature hence

μ = 0

QUESTION: 5

Change in internal energy of small temperature change ΔT for ideal gas is expressed by the relation (for unit mass)

Solution:

QUESTION: 6

Change in enthalpy for small temperature change ΔT for ideal gas for unit mass is expressed by the relation

Solution:

QUESTION: 7

In Van der Waal’s gas equation The unit of b is

Solution:

QUESTION: 8

Ratio of specific heat for an ideal gas is given by

Solution:

Hence,

QUESTION: 9

The relation pv^{γ}= constant, where γ is the ratio of the specific heats of ideal gas is applicable to

Solution:

QUESTION: 10

When a gas is to be stored, the type of compression that would be ideal is

Solution:

For isothermal compression, work of compression is minimum hence isothermal compression is a ideal compression process.

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