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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

Pick out the correct statement?
A If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container,
B A process is irreversible as long as Δ S for the system is greater than zero
C The mechanical work done by a system is always equal to∫P.dV
D The heat of formation of a compound is defined as the heat of reaction leading to the
Correct Answer: The heat of formation of a compound is defined as the heat of reaction leading to the
_____________ law of thermodynamics ascertains the direction of a particular spontaneous process?
A Zeroth
B First
C Second
D Third
Correct Answer: Second
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
A Increase
B Decrease
C Remain same
D Increase in summer and will decrease in winter
Correct Answer: Increase
The principle applied in liquefaction of gases is_____________________?
A Adiabatic expansion
B Joule-Thomson effect
C Both A. and B
D Neither A. nor B
Correct Answer: Both A. and B
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
A Decreases
B Increases
C Remains constant
D Decreases logarithmically
Correct Answer: Increases
Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of___________________?
A Solution
B Vaporisation
C Formation
D Sublimation
Correct Answer: Vaporisation
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?
A Less pronounced
B More pronounced
C Equal
D Data insufficient, can’t be predicted
Correct Answer: More pronounced
What happens in a reversible adiabatic expansion process ?
A Heating takes place
B Cooling takes place
C Pressure is constant
D Temperature is constant
Correct Answer: Cooling takes place
Number of phases in a colloidal system is_____________________?
A 1
B 2
C 3
D 4
Correct Answer: 2
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?
A Straight line
B Sine curve
C Parabola
D Hyperbola
Correct Answer: Straight line
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