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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

Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are_______________?
A Always greater than one
B Same at the same reduced temperature
C Same at the same reduced pressure
D Both B. & C
Correct Answer: Both B. & C
Heat of reaction at constant volume is identified with _____________ change?
A Enthalpy
B Internal energy
C Either A. or B
D Neither A. nor B
Correct Answer: Internal energy
In a turbine, the fluid expands almost_________________?
A Isothermally
B Isobarically
C Adiabatically
D None of these
Correct Answer: Adiabatically
The equation, PV = nRT, is best obeyed by gases at____________________?
A Low pressure & high temperature
B High pressure & low temperature
C Low pressure & low temperature
D None of these
Correct Answer: Low pressure & high temperature
The number of degrees of freedom at the triple point of water is__________________?
A 0
B 1
C 2
D 3
Correct Answer: 0
Gibbs-Helmholtz equation is__________________?
A ΔF = ΔH + T [∂(ΔF)/∂T]P
B ΔF = ΔH – TΔT
C d(E – TS) T, V < 0
D dP/dT = ΔHvap/T.ΔVvap
Correct Answer: ΔF = ΔH + T [∂(ΔF)/∂T]P
The chemical potential for a pure substance is ____________ its partial molal free energy?
A More than
B Less than
C Equal to
D Not related to
Correct Answer: Equal to
Free energy change of mixing two liquid substances is a function of the__________________?
A Concentration of the constituents only
B Quantities of the constituents only
C Temperature only
D All A, B. and C
Correct Answer: All A, B. and C
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system________________?
A its internal energy (U) decreases and its entropy (S) increases
B U and S both decreases
C U decreases but S is constant
D U is constant but S decreases
Correct Answer: U and S both decreases
In case of an _______________ process, the temperature of the system increases?
A Isothermal compression
B Isothermal expansion
C Adiabatic expansion
D Adiabatic compression
Correct Answer: Adiabatic compression
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