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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

Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which___________________?
A A homogeneous solution (say of phenol water) is formed
B Mutual solubility of the two liquids shows a decreasing trend
C Two liquids are completely separated into two layers
D None of these
Correct Answer: A homogeneous solution (say of phenol water) is formed
High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process ?
A Δ H = 0 and ΔS = 0
B Δ H ≠ 0 and ΔS = 0
C Δ H ≠ 0 and ΔS ≠ 0
D Δ H = 0 and ΔS ≠ 0
Correct Answer: Δ H ≠ 0 and ΔS = 0
Maxwell’s relation corresponding to the identity, dH = dS = Vdp + Σμi dni is_____________________?
A (∂T/∂V)S, ni = -(∂P/∂S)V, ni
B (∂S/∂P)T, ni = (∂V/∂T)P, ni
C (∂S/∂V)T, ni = (∂P/∂T)V, ni
D (∂T/∂P)S, ni = (∂V/∂S)P, ni
Correct Answer: (∂T/∂P)S, ni = (∂V/∂S)P, ni
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a _____________ vapour?
A Superheated
B Desuperheated
C Non-condensable
D None of these
Correct Answer: Superheated
A system is said to be isopiestic, if there is no ______________ change?
A Temperature
B Pressure
C Volume
D None of these
Correct Answer: Pressure
1st law of thermodynamics is nothing but the law of conservation of___________________?
A Momentum
B Mass
C Energy
D None of these
Correct Answer: Energy
What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor ?
A 2
B 0
C 3
D 1
Correct Answer: 2
The third law of thermodynamics states that the__________________?
A Heat capacity of a crystalline solid is zero at absolute zero temperature
B Heat transfer from low temperature to high temperature source is not possible without external
C Gases having same reduced properties behaves similarly
D None of these
Correct Answer: Heat capacity of a crystalline solid is zero at absolute zero temperature
Which of the following is not an equation of state ?
A Bertholet equation
B Clausius-Clapeyron equation
C Beattie-Bridgeman equation
D None of these
Correct Answer: Clausius-Clapeyron equation
Which of the following identities can be most easily used to verify steam table data for superheated steam ?
A (∂T/∂V)S = (∂p/∂S)V
B (∂T/∂P)S = (∂V/∂S)P
C (∂P/∂T)V = (∂S/∂V)T
D (∂V/∂T)P = -(∂S/∂P)T
Correct Answer: (∂V/∂T)P = -(∂S/∂P)T
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