Chemical Engineering Thermodynamics

321. Refrigeration cycle

1. Violates second law of thermodynamics
2. Involves transfer of heat from low temperature to high temperature
3. Both (A) and (B)
4. Neither (A) nor (B)

View answer

322. Requisites of a reversible process is that the

1. System and surroundings pressure be equal
2. Friction in the system should be absent
3. System and surroundings temperature be equal
4. None of these

View answer

323. Rotary lime kiln is an example of a/an _________ system.

1. Closed
2. Open
3. Isolated
4. Non-thermodynamic

View answer

324. Second law of thermodynamics is concerned with the

1. Amount of energy transferred
2. Direction of energy transfer
3. Irreversible processes only
4. Non-cyclic processes only

View answer

325. Solid and liquid phases of a substance are in equilibrium at the

1. Critical temperature
2. Melting point
3. Freezing point
4. Both (B) and (C)

View answer

326. Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the

1. Low pressure and high temperature
2. Low pressure and low temperature
3. High pressure and low temperature
4. High pressure and high temperature

View answer

327. Sound waves propagation in air exemplifies an _________ process.

1. Adiabatic
2. Isothermal
3. Isometric
4. None of these

View answer

328. Specific _________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.).

1. Entropy
2. Internal energy
3. Enthalpy
4. Gibbs free energy

View answer

329. Specific _________ does not change during phase change at constant temperature and pressure.

1. Entropy
2. Gibbs energy
3. Internal energy
4. Enthalpy

View answer

330. Specific heat of a gas for a reversible adiabatic process is

1. Negative
2. Zero
3. Infinity
4. None of these

View answer