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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Specific/molar Gibbs free energy for a pure substance does not change during________________?
A Sublimation
B Vaporisation
C Melting
D Either A, B. or C.
Correct Answer: Either A, B. or C.
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?
A Less
B More
C Same
D Dependent on climatic conditions
Correct Answer: Less
The expression, nCv(T2 – T1), is for the _____________ of an ideal gas?
A Work done under adiabatic condition
B Co-efficient of thermal expansion
C Compressibility
D None of these
Correct Answer: Work done under adiabatic condition
For a spontaneous process, free energy__________________?
A Is zero
B Increases
C Decreases whereas the entropy increases
D And entropy both decrease
Correct Answer: Decreases whereas the entropy increases
Which of the following has the minimum value of COP for a given refrigeration effect ?
A Reverse Carnot cycle
B Ordinary vapour-compression cycle
C Vapour-compression process with a reversible expansion engine
D Air refrigeration cycle
Correct Answer: Air refrigeration cycle
For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the _______________ of each component must be same in all phases?
A Chemical potential
B Fugacity
C Both A. and B
D Neither A. nor B
Correct Answer: Both A. and B
Partial molar free energy of an element A in solution is same as its__________________?
A Chemical potential
B Activity
C Fugacity
D Activity co-efficient
Correct Answer: Chemical potential
The chemical potential of any constituent of an ideal solution depends on the ______________ of the solution?
A Temperature
B Pressure
C Composition
D All (A), B. and (C)
Correct Answer: All (A), B. and (C)
Entropy of the system decreases, when_______________?
A Snow melts into water
B A gas expands spontaneously from high pressure to low pressure
C Water is converted into ice
D Both B. & C
Correct Answer: Both B. & C
In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible ____________ process?
A Isometric
B Polytropic
C Isentropic
D Isobaric
Correct Answer: Polytropic
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