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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

Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is___________________?
A 300 × (32/7)
B 300 × (33/5)
C 300 × (333/7)
D 300 × (35/7)
Correct Answer: 300 × (32/7)
The reaction A (l) → R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The numbers of degrees of freedom are ?
A 1
B 2
C 3
D 0
Correct Answer: 2
A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yi is the liquid activity coefficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of ______________________?
A Temperature only
B Temperature and pressure only
C Temperature, pressure and liquid composition xi only
D Temperature, pressure, liquid composition xi and vapour composition yi
Correct Answer: Temperature, pressure and liquid composition xi only
Gibbs-Duhem equation relates composition in liquid phase and the _____________ at constant temperature & pressure?
A Fugacity
B Partial pressure
C Activity co-efficient
D All (A), (B), and (C)
Correct Answer: All (A), (B), and (C)
For a reversible process involving only pressure-volume work____________________?
A (dF)T, p 0
B
C (dF)T, p = 0
D (dA)T, v < 0
Correct Answer: (dF)T, p = 0
Which is an example of closed system ?
A Air compressor
B Liquid cooling system of an automobile
C Boiler
D None of these
Correct Answer: Liquid cooling system of an automobile
Work done in an adiabatic process between two states depends on the__________________?
A Rate of heat transmission
B Initial state only
C End states only
D None of these
Correct Answer: End states only
Fugacity and pressure are numerically not equal for the gases__________________?
A At low temperature and high pressure
B At standard state
C Both A. and B
D In ideal state
Correct Answer: Both A. and B
For an ideal gas, the enthalpy__________________?
A Increases with rise in pressure
B Decreases with rise in pressure
C Is independent of pressure
D Is a path function
Correct Answer: Is independent of pressure
Clapeyron Equation deals with the____________________?
A Rate of change of vapour pressure with temperature
B Effect of an inert gas on vapour pressure
C Calculation of ΔF for spontaneous phase change
D Temperature dependence of heat of phase transition
Correct Answer: Rate of change of vapour pressure with temperature
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