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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

Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
A Expansion valve
B Condenser
C Refrigerator
D Compressor
Correct Answer: Compressor
Lenz’s law results from the law of conservation of___________________?
A Mass
B Momentum
C Energy
D None of these
Correct Answer: Energy
At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is____________________?
A Zero
B One
C Infinity
D Negative
Correct Answer: One
____________ does not change during phase transformation processes like sublimation, melting & vaporisation?
A Entropy
B Gibbs free energy
C Internal energy
D All (A), B. & (C)
Correct Answer: Gibbs free energy
At a given temperature, the volume of a gas dissolved in a solvent _______________ with increase in pressure?
A Increases
B Decreases
C Remains unchanged
D May increase or decrease; depends on the gas
Correct Answer: Remains unchanged
In the reaction; N2 + O2 ⇌ 2NO, increasing the pressure will result in_________________?
A Shifting the equilibrium towards right
B Shifting the equilibrium towards left
C No change in equilibrium condition
D None of these
Correct Answer: No change in equilibrium condition
1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be ?
A 35 K
B 174 K
C 274 K
D 154 K
Correct Answer: 274 K
Work done may be calculated by the expression ∫ p dA for _____________ processes ?
A Non-flow reversible
B Adiabatic
C Both A. and B
D Neither A. nor B
Correct Answer: Both A. and B
Sound waves propagation in air exemplifies an ______________ process?
A Adiabatic
B Isothermal
C Isometric
D None of these
Correct Answer: Adiabatic
Which of the following is an undesirable characteristic of a refrigerant ?
A It should be non-explosive
B It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
C Its vapor pressure at the condenser temperature should be very high
D None of these
Correct Answer: It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
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