M C Q s D r i v e

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.

The internal energy of an ideal gas does not change in a reversible _____________ process?
A Isothermal
B Adiabatic
C Isobaric
D Isometric
Correct Answer: Isothermal
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) ?
A (∂P/∂V)S = (∂P/∂V)T
B (∂P/∂V)S = [(∂P/∂V)T]Y
C (∂P/∂V)S = y(∂P/∂V)T
D (∂P/∂V)S = 1/y(∂P/∂V)T
Correct Answer: (∂P/∂V)S = y(∂P/∂V)T
Which of the following decreases with increase in pressure ?
A Melting point of ice
B Melting point of wax
C Boiling point of liquids
D None of these
Correct Answer: Melting point of ice
In the reaction, C + O2 → CO2; ΔH = – 94 kcal. What is the heat content (enthalpy) of O2 ?
A -94 kcal
B > -94 kcal
C < – 94 kcal
D Zero
Correct Answer: Zero
Near their critical temperatures, all gases occupy volumes _____________ that of the ideal gas?
A Less than
B Same as
C More than
D Half
Correct Answer: Less than
Refrigeration cycle_________________?
A Violates second law of thermodynamics
B Involves transfer of heat from low temperature to high temperature
C Both A. and B
D Neither A. nor B
Correct Answer: Involves transfer of heat from low temperature to high temperature
The number of degrees of freedom for a mixture of ice and water (liquid) are ____________________?
A 3
B 2
C 1
D 0
Correct Answer: 1
Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?
A 1st
B Zeroth
C 3rd
D None of these
Correct Answer: Zeroth
Boiling of liquid is accompanied with increase in the__________________?
A Vapor pressure
B Specific Gibbs free energy
C Specific entropy
D All (A), B. and (C)
Correct Answer: Vapor pressure
The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?
A Isobaric
B Isothermal
C Adiabatic
D None of these
Correct Answer: Isothermal