Chemical Engineering MCQs

6108 MCQs  (Page 581 of 611)

Attempt Chemical Engineering Quiz
Measurement of thermodynamic property of temperature is facilitated by ____________ law of thermodynamics?
A. 1st
B. Zeroth
C. 3rd
D. None of these
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A system undergoes a change from a given initial state to a given final state either by an irreversible process or by a reversible process, then (where, Δ S1 and Δ SR are the entropy changes of the system for the irreversible and reversible processes respectively) ?
A. Δ s1 is always δ sr
C. Δ s1 is always > δ sr
D. Δ s1 is always = δ sr
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The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible _____________ process?
A. Isobaric
B. Isothermal
C. Adiabatic
D. None of these
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Which of the following equations is used for the prediction of activity co-efficient from experiments ?
A. Van laar equation
B. Margules equation
C. Wilson’s equation
D. All a, b. and c
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Melting of ice is an example of an _____________ process?
A. Adiabatic
B. Isothermal
C. Isometric
D. None of these
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In an ideal refrigeration cycle, the change in internal energy of the fluid is_____________?
A. +ve
B. -ve
C. 0
D. Either of the above three; depends on the nature of refrigerant
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Helmholtz free energy A. is defined as____________________?
A. A = h – ts
B. A = e – ts
C. A = h + ts
D. None of these
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Which of the following is not affected by temperature changes ?
A. Fugacity
B. Activity co-efficient
C. Free energy
D. None of these
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What happens in a reversible adiabatic compression ?
A. Heating occurs
B. Cooling occurs
C. Pressure is constant
D. Temperature is constant
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Maximum work that could be secured by expanding the gas over a given pressure range is the _____________ work?
A. Isothermal
B. Adiabatic
C. Isentropic
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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