Chemical Engineering Thermodynamics MCQs

Question 1

Specific volume of an ideal gas is

Accepted Answer

The reciprocal of its density

Answer

Equal to its density

Answer

Proportional to pressure

Answer

None of these

Question 2

The necessary and sufficient condition for equilibrium between two phases is

Accepted Answer

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

Answer

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

Answer

The temperature of each phase should be same

Answer

The pressure should be same in the two phases

Question 3

In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v2 = 3 m3) is maximum, when the value of 'n' is

Accepted Answer

0

Answer

1

Answer

1.44

Answer

1.66

Question 4

In an adiabatic process, the

Accepted Answer

Heat transfer is zero

Answer

Temperature change is zero

Answer

Work done is a path function

Answer

Enthalpy remains constant

Question 5

Which of the following is not an extensive property?

Accepted Answer

Refractive index

Answer

Free energy

Answer

Entropy

Answer

None of these

Question 6

In an irreversible process

Accepted Answer

Tds - dE + dW< 0

Answer

Tds = dE - dW = 0

Answer

DE - dW - Tds = 0

Answer

Tds - dT + dW< 0

Question 7

In any spontaneous process,

Accepted Answer

Both F and A decreases

Answer

Only F decreases

Answer

Only A decreases

Answer

Both F and A increase

Question 8

The enthalpy change when ammonia gas is dissolved in water is called the heat of

Accepted Answer

Solution

Answer

Formation

Answer

Dilution

Answer

Combustion

Question 9

During adiabatic expansion of gas

Accepted Answer

None of these

Answer

Pressure remains constant

Answer

Pressure is increased

Answer

Temperature remains constant