CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

More

Same

Data insufficient to predict

Less

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YOUR ANSWER : ?

The unit of fugacity is the same as that of the

Temperature

Molar concentration

Pressure

Volume

TRUE ANSWER : ?
YOUR ANSWER : ?

Enthalpy of a gas depends upon its

Mass

Temperature

Pressure

Volume

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Pick out the undesirable property for a good refrigerant.

High thermal conductivity

High viscosity

Low freezing point

Large latent heat of vaporisation

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Which of the following will increase the volume of a real gas by four times ?

Reducing pressure to one fourth at constant temperature

Reducing temperature to one fourth at constant pressure

Doubling the absolute temperature as well as pressure of the gas

Reducing the temperature to half and doubling the pressure

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Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)?

Vapour compression with a reversible expansion engine

Air cycle

Carnot cycle

Ordinary vapour compression cycle

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The necessary and sufficient condition for equilibrium between two phases is

The temperature of each phase should be same

The pressure should be same in the two phases

The chemical potential of each component should be same in the two phases

The concentration of each component should be same in the two phases

TRUE ANSWER : ?
YOUR ANSWER : ?

For an irreversible process involving only pressure-volume work

(dF)T, p > 0

(dF)T, p

(dF)T, p = 0

(dA)T, v >0

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PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.

Isothermal

Isobaric

Adiabatic

Isentropic

TRUE ANSWER : ?
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In an ideal solution, the activity of a component equals its

Partial pressure

Fugacity at the same temperature and pressure

Mole fraction

None of these

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YOUR ANSWER : ?