Chemical Engineering MCQs

6108 MCQs  (Page 557 of 611)

Attempt Chemical Engineering Quiz
The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is_________________?
A. R loge 4
B. R log10 4
C. Cv log10 4
D. Cv loge 4
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The first law of thermodynamics is a restatement of the law of conservation of_________________?
A. Mass
B. Energy
C. Momentum
D. None of these
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A liquid under pressure greater than its vapour pressure for the temperature involved is called a _____________ liquid?
A. Sub-cooled
B. Saturated
C. Non-solidifiable
D. None of these
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________________ decreases during adiabatic throttling of a perfect gas?
A. Entropy
B. Temperature
C. Enthalpy
D. Pressure
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Change of state namely evaporation condensation, freezing and melting is an _______________ process?
A. Isothermal
B. Adiabatic
C. Isobaric
D. Isochoric
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Claude gas liquefaction process employs cooling___________________?
A. At constant pressure
B. By throttling
C. By expansion in an engine
D. None of these
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Co-efficient of Performance (COP) of a refrigerator is the ratio of the ______________________?
A. Work required to refrigeration obtained
B. Refrigeration obtained to the work required
C. Lower to higher temperature
D. Higher to lower temperature
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The activity of an ideal gas is numerically ____________ its pressure?
A. More than
B. Less than
C. Equal to
D. Data insufficient, can’t be predicted
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Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be___________________?
A. Same
B. Doubled
C. Halved
D. One fourth of its original value
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During the phase transition, _______________ changes?
A. Pressure
B. Volume
C. Temperature
D. All a , b. and c
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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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