Chemical Engineering MCQs

6108 MCQs  (Page 577 of 611)

Attempt Chemical Engineering Quiz
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
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_____________ 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
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As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches________________?
A. Zero
B. Unity
C. Infinity
D. None of these
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Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?
A. Decrease on addition of cl2
B. Increase on addition of an inert gas at constant pressure
C. Decrease on increasing the pressure of the system
D. None of these
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The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?
A. Compressibility
B. Work done under adiabatic condition
C. Work done under isothermal condition
D. Co-efficient of thermal expansion
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Critical compressibility factor for all substances___________________?
A. Are more or less constant (vary from 0.2 to 0.3)
B. Vary as square of the absolute temperature
C. Vary as square of the absolute pressure
D. None of these
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Internal energy change of a system over one complete cycle in a cyclic process is__________________?
A. Zero
B. +ve
C. -ve
D. Dependent on the path
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Entropy of an ideal gas depends upon its__________________?
A. Pressure
B. Temperature
C. Both a. & b
D. Neither a. nor b
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Second law of thermodynamics is concerned with the_________________?
A. Amount of energy transferred
B. Direction of energy transfer
C. Irreversible processes only
D. Non-cyclic processes only
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In case of the decomposition of hydroiodic acid (2HI ⇌ H2 + I2), addition of H2 (at equilibrium condition) will__________________?
A. Increase the partial pressure of i2
B. Decrease the partial pressure of hi
C. Diminish the degree of dissociation of hi
D. None of these
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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