M C Q s D r i v e

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.

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be _____________ litres?
A 448
B 224
C 22.4
D Data insufficient; can’t be computed
Correct Answer: 448
Pick out the correct equation relating ‘F’ and ‘A’___________________?
A F = A + PV
B F = E + A
C F = A – TS
D F = A + TS
Correct Answer: F = A + PV
In the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2, decrease in the pressure of the system will _____________ the degree of dissociation of PCl5?
A Increase
B Decrease
C Not alter
D None of these
Correct Answer: Increase
The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by____________________?
A (R/ΔH) (1/T1 – 1/T2)
B (ΔH/R) (1/T1 – 1/T2)
C (ΔH/R) (1/T2 – 1/T1)
D (1/R) (1/T1 – 1/T2)
Correct Answer: (ΔH/R) (1/T1 – 1/T2)
All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?
A CO2
B H2
C O2
D N2
Correct Answer: H2
Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates__________________?
A Use of only one graph for all gases
B Covering of wide range
C Easier plotting
D More accurate plotting
Correct Answer: Use of only one graph for all gases
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?
A μ° + RT ln f
B μ°+ R ln f
C μ° + T ln f
D μ° + R/T ln f
Correct Answer: μ° + RT ln f
Charles’ law for gases states that__________________?
A V/T = Constant
B V ∝ 1/T
C V ∝ 1/P
D PV/T = Constant
Correct Answer: V/T = Constant
______________ Equation predicts the activity co-efficient from experimental data ?
A Lewis-Randall
B Margules
C Van Laar
D Both B. & C.
Correct Answer: Both B. & C.
The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is__________________?
A -2 RT ln 0.5
B -RT ln 0.5
C 0.5 RT
D 2 RT
Correct Answer: -RT ln 0.5