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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

What is the value of ln y (where y = activity co-efficient) for ideal gases ?
A Zero
B Unity
C Infinity
D Negative
Correct Answer: Zero
In case of a close thermodynamic system, there is ______________ across the boundaries?
A No heat and mass transfer
B No mass transfer but heat transfer
C Mass and energy transfer
D None of these
Correct Answer: No mass transfer but heat transfer
What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?
A 0
B 2
C 1
D 3
Correct Answer: 1
The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?
A (∂E/∂ni)S, v, nj
B (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
C (∂H/∂ni)S, P, nj
D All (A), B. and (C)
Correct Answer: All (A), B. and (C)
In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?
A High temperature
B Low pressure
C Low temperature only
D Both low temperature and high pressure
Correct Answer: Both low temperature and high pressure
The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?
A Chemical potentials of a given component should be equal in all phases
B Chemical potentials of all components should be same in a particular phase
C Sum of the chemical potentials of any given component in all the phases should be the same
D None of these
Correct Answer: Chemical potentials of a given component should be equal in all phases
Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be__________________?
A 580
B 640
C 1160
D Data insufficient; can’t be computed
Correct Answer: 1160
_____________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low?
A Bucket
B Throttling
C Separating
D A combination of separating & throttling
Correct Answer: A combination of separating & throttling
Joule-Thomson co-efficient for a perfect gas is_____________________?
A Zero
B Positive
C Negative
D None of these
Correct Answer: Zero
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the__________________?
A Cold reservoir approaches zero
B Hot reservoir approaches infinity
C Either A. or B
D Neither A. nor B
Correct Answer: Either A. or B
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