Chemical Engineering Thermodynamics MCQs

Question 1

Standard temperature and pressure (S.T.P.) is

Accepted Answer

0°C and 750 mm Hg

Answer

15°C and 750 mm Hg

Answer

0°C and 1 kgf/cm2

Answer

15°C and 1 kgf/cm2

Question 2

In case of an __________ process, the temperature of the system increases.

Accepted Answer

Adiabatic compression

Answer

Isothermal compression

Answer

Isothermal expansion

Answer

Adiabatic expansion

Question 3

In a turbine, the fluid expands almost

Accepted Answer

Adiabatically

Answer

Isothermally

Answer

Isobarically

Answer

None of these

Question 4

Specific/molar Gibbs free energy for a pure substance does not change during

Accepted Answer

Either A, B or C

Answer

Sublimation

Answer

Vaporisation

Answer

Melting

Question 5

1st law of thermodynamics is nothing but the law of conservation of

Accepted Answer

Energy

Answer

Momentum

Answer

Mass

Answer

None of these

Question 6

__________ decreases during adiabatic throttling of a perfect gas.

Accepted Answer

Pressure

Answer

Entropy

Answer

Temperature

Answer

Enthalpy

Question 7

Cv is given by

Accepted Answer

$${\left( {\frac{{\partial {	ext{E}}}}{{\partial {	ext{T}}}}} ight)_{	ext{V}}}$$

Answer

$${\left( {\frac{{\partial {	ext{E}}}}{{\partial {	ext{V}}}}} ight)_{	ext{T}}}$$

Answer

$${\left( {\frac{{\partial {	ext{E}}}}{{\partial {	ext{P}}}}} ight)_{	ext{V}}}$$

Answer

$${\left( {\frac{{\partial {	ext{V}}}}{{\partial {	ext{T}}}}} ight)_{	ext{P}}}$$

Question 8

Kopp's rule is used to calculate the heat capacity of

Accepted Answer

Solids

Answer

Liquids

Answer

Gases

Answer

All of the above

Question 9

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called __________ temperature.

Accepted Answer

Boyle

Answer

Inversion

Answer

Critical

Answer

Reduced