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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 wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?
A Decrease on addition of Cl2
B Increase on addition of an inert gas at constant pressure
C Decrease on increasing the pressure of the system
D None of these
Correct Answer: None of these
The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?
A Compressibility
B Work done under adiabatic condition
C Work done under isothermal condition
D Co-efficient of thermal expansion
Correct Answer: Work done under isothermal condition
Critical compressibility factor for all substances___________________?
A Are more or less constant (vary from 0.2 to 0.3)
B Vary as square of the absolute temperature
C Vary as square of the absolute pressure
D None of these
Correct Answer: Are more or less constant (vary from 0.2 to 0.3)
Entropy of an ideal gas depends upon its__________________?
A Pressure
B Temperature
C Both A. & B
D Neither A. nor B
Correct Answer: Both A. & B
Internal energy change of a system over one complete cycle in a cyclic process is__________________?
A Zero
B +ve
C -ve
D Dependent on the path
Correct Answer: Zero
In case of the decomposition of hydroiodic acid (2HI ⇌ H2 + I2), addition of H2 (at equilibrium condition) will__________________?
A Increase the partial pressure of I2
B Decrease the partial pressure of HI
C Diminish the degree of dissociation of HI
D None of these
Correct Answer: Diminish the degree of dissociation of HI
Second law of thermodynamics is concerned with the_________________?
A Amount of energy transferred
B Direction of energy transfer
C Irreversible processes only
D Non-cyclic processes only
Correct Answer: Direction of energy transfer
Which law of the thermodynamics provides basis for measuring the thermodynamic property ?
A First law
B Zeroth law
C Third law
D Second law
Correct Answer: Zeroth law
Cp of a gas at its critical temperature and pressure_______________?
A Becomes zero
B Becomes infinity
C Equals 1 kcal/kmol °K
D Equals 0.24 kcal/kmol °K
Correct Answer: Becomes infinity
An ideal liquid refrigerant should______________________?
A Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils
B Not have unduly high vapour pressure at the condenser temperature
C Both A. and B
D Have low specific heat
Correct Answer: Both A. and B
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