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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

No work is done by the system, when a reaction occurs at constant__________________?
A Volume
B Temperature
C Pressure
D None of these
Correct Answer: Volume
Which one is true for a throttling process ?
A A gas may have more than one inversion temperatures
B The inversion temperature is different for different gases
C The inversion temperature is same for all gases
D The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity
Correct Answer: The inversion temperature is different for different gases
If atmospheric temperature and dew point are nearly equal, then the relative humidity is_______________?
A Zero
B 50%
C Almost 100%
D unpredictable
Correct Answer: Almost 100%
In vapour compression refrigeration system, if the evaporator temperature and the condenser temperatures are -13°C and 37°C respectively, the Carnot COP will be________________?
A 5.2
B 6.2
C 0.168
D Data insufficient, can’t be found out
Correct Answer: 5.2
What is the value of Joule-Thomson co-efficient for an ideal gas ?
A +ve
B -ve
C 0
D ∞
Correct Answer: 0
Chemical engineering thermodynamics is concerned with the ____________ in/of chemical processes?
A Reaction mechanism
B Calculation of rates
C Energy transformation from one form to another
D None of these
Correct Answer: Energy transformation from one form to another
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?
A 1.572
B 1.9398
C 3.389
D 4.238
Correct Answer: 1.572
Which of the following is affected by the temperature ?
A Fugacity
B Activity co-efficient
C Free energy
D All A, B. & C
Correct Answer: All A, B. & C
In any spontaneous process, the ______________ free energy decreases ?
A Helmholtz
B Gibbs
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the________________?
A Steam to ethylene ratio
B Temperature
C Pressure
D None of these
Correct Answer: None of these
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