Chemical Engineering MCQs

6108 MCQs (Page 567 of 611)

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For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?

A. 6738.9
B. 6753.5
C. 7058.3
D. 9000

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Filling of gas from a high pressure cylinder into small bottles is an example of a/an ______________ process?

A. Equilibrium
B. Adiabatic
C. Steady
D. Unsteady

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Pick out the undesirable property for a good refrigerant ?

A. High thermal conductivity
B. Low freezing point
C. Large latent heat of vaporisation
D. High viscosity

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Degree of freedom of the system ice-water-vapour will be ________________?

A. 0
B. 1
C. 2
D. 3

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If we increase the pressure on a substance (which is at its triple point), then the triple point __________________?

A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the substance

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Heating of water under atmospheric pressure is an ______________ process?

A. Isochoric
B. Isobaric
C. Adiabatic
D. Isothermal

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In a homogeneous solution, the activity co-efficient of a component depends upon the_________________?

A. Pressure
B. Composition
C. Temperature
D. All (a), b. and (c)

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The main feature of Carnot refrigeration cycle is that, it________________________?

A. Does not need the addition of external work for its functioning
B. Transfers heat from high temperature to low temperature
C. Accomplishes the reverse effect of the heat engine
D. None of these

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Equilibrium constant decreases as the temperature___________________?

A. Increases, for an exothermic reaction
B. Decreases, for an exothermic reaction
C. Increases, for an endothermic reaction
D. None of these

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The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the _____________ equation?

A. Gibbs-duhem
B. Van laar
C. Gibbs-helmholtz
D. Margules

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