Basic Mechanical Engineering (3110006) MCQs

MCQs of Properties of Gases

Showing 1 to 10 out of 25 Questions
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1.
Air is assumed to be
(a) ideal gas
(b) real gas
(c) condensed gas
(d) none of the above
Answer:

Option (a)

2.
The internal energy of a gas is a function of
(a) enthalpy
(b) pressure
(c) pressure and volume
(d) temperature
Answer:

Option (d)

3.
The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by
(a) Boyle's law
(b) Charles' law
(c) Gay-Lussac law
(d) all of these
Answer:

Option (d)

4.
The Universal gas Constant is equal to
(a) M/R
(b) R/M
(c) M*R
(d) all of the above
Answer:

Option (c)

5.
The relation between Cp and Cv is:
(a) Cp-Cv=R
(b) Cv-Cp=R
(c) Cv+Cp=R
(d) Cv·Cp=R
Answer:

Option (a)

6.
The value of characteristics gas constant (R) in S. I. units is
(a) 0.287 J/kgK
(b) 2.87 J/kgK
(c) 28.7 J/kgK
(d) 287 J/kgK
Answer:

Option (d)

7.
Workdone during the isochoric process
(a) 0
(b) 0
(c) pV2-V1
(d) 1
Answer:

Option (a)

8.
The same volume of all gases would represent their
(a) densities
(b) specific weights
(c) molecular weights
(d) characteristic gas constants
Answer:

Option (c)

9.
The statement that molecular weights of all gases occupy the same volume is known as
(a) Avogadro’s hypothesis
(b) Dalton’s law
(c) gas law
(d) law of thermodynamics
Answer:

Option (a)

10.
When a gas is heated at constant pressure, the heat supplied
(a) increases the internal energy of the gas
(b) increases the temperature of the gas
(c) does some external work during the expansion
(d) both (b) and (c)
Answer:

Option (d)

Showing 1 to 10 out of 25 Questions
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