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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

A system is said to be isopiestic, if there is no ______________ change?
A Temperature
B Pressure
C Volume
D None of these
Correct Answer: Pressure
1st law of thermodynamics is nothing but the law of conservation of___________________?
A Momentum
B Mass
C Energy
D None of these
Correct Answer: Energy
What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor ?
A 2
B 0
C 3
D 1
Correct Answer: 2
The third law of thermodynamics states that the__________________?
A Heat capacity of a crystalline solid is zero at absolute zero temperature
B Heat transfer from low temperature to high temperature source is not possible without external
C Gases having same reduced properties behaves similarly
D None of these
Correct Answer: Heat capacity of a crystalline solid is zero at absolute zero temperature
Which of the following is not an equation of state ?
A Bertholet equation
B Clausius-Clapeyron equation
C Beattie-Bridgeman equation
D None of these
Correct Answer: Clausius-Clapeyron equation
Which of the following identities can be most easily used to verify steam table data for superheated steam ?
A (∂T/∂V)S = (∂p/∂S)V
B (∂T/∂P)S = (∂V/∂S)P
C (∂P/∂T)V = (∂S/∂V)T
D (∂V/∂T)P = -(∂S/∂P)T
Correct Answer: (∂V/∂T)P = -(∂S/∂P)T
The melting point of paraffin wax (which contracts on solidification) _______________ with pressure rise?
A Increases
B Decreases
C Remains unchanged
D Decreases linearly
Correct Answer: Increases
In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in_____________?
A Enhanced COP
B Decreased COP
C No change in the value of COP
D Increased or decreased COP; depending upon the type of refrigerant
Correct Answer: Enhanced COP
In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when___________________?
A Cp < Cv
B Cp = Cv
C Cp > Cv
D C ≥ Cv
Correct Answer: Cp = Cv
“At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?
A Third law of thermodynamics
B Second law of thermodynamics
C Nernst heat theorem
D Maxwell’s relations
Correct Answer: Third law of thermodynamics
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