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Chemical Engineering Thermodynamics MCQ Question with Answer

Chemical Engineering Thermodynamics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 57
The thermodynamic law, PVy = constant, is not applicable in case of

Ideal compression of air
Free expansion of an ideal gas
Adiabatic expansion of steam in a turbine
Adiabatic compression of a perfect gas

Question No : 58
Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

Fusion
Vaporisation
Transition
None of these

Question No : 59
The equation, Cp - Cv = R, is true for __________ gas.

No
Any real
Only ideal
Both (B) and (C)

Question No : 60
The enthalpy change when ammonia gas is dissolved in water is called the heat of

Solution
Formation
Dilution
Combustion

Question No : 61
On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/ ∂V)T are related as (where, y = Cp/Cv)

(∂P/∂V)S = (∂P/∂V)T
(∂P/∂V)S = [(∂P/∂V)T]Y
(∂P/∂V)S = y(∂P/∂V)T
(∂P/∂V)S = 1/y(∂P/∂V)T

Question No : 62
Which of the following is not an intensive property?

Chemical potential
Surface tension
Heat capacity
None of these

Question No : 63
The value of gas constant 'R' is

1.987 cal/gm mole °K
1.987 BTU/lb. mole °R
Both (A) and (B)
Neither (A) nor (B)

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