Chemical Engineering Thermodynamics

381. The heat capacities for the ideal gas state depend upon the

  1. Pressure
  2. Temperature
  3. Both (A) & (B)
  4. Neither (A) nor (B)

Correct answer: (B)
Temperature

382. The intensive properties are

  1. Molar volume, density, viscosity and boiling point
  2. Refractive index and surface tension
  3. Both (A) and (B)
  4. None of these

Correct answer: (C)
Both (A) and (B)

383. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant Cv), depends upon its

  1. Pressure
  2. Volume
  3. Temperature
  4. All (A), (B) & (C)

Correct answer: (C)
Temperature

384. The internal energy of an ideal gas does not change in a reversible _________ process.

  1. Isothermal
  2. Adiabatic
  3. Isobaric
  4. Isometric

Correct answer: (A)
Isothermal

385. The internal energy of an ideal gas is a function of its _________ only.

  1. Molecular size
  2. Volume
  3. Pressure
  4. Temperature

Correct answer: (D)
Temperature

386. The internal energy of an incompressible fluid depends upon its

  1. Pressure
  2. Temperature
  3. Both (A) & (B)
  4. Neither (A) nor (B)

Correct answer: (B)
Temperature

388. The kinetic energy of gas molecule is zero at

  1. 0°C
  2. 273°C
  3. 100°C
  4. -273°C

Correct answer: (D)
-273°C

389. The main feature of Carnot refrigeration cycle is that, it

  1. Does not need the addition of external work for its functioning
  2. Transfers heat from high temperature to low temperature
  3. Accomplishes the reverse effect of the heat engine
  4. None of these

Correct answer: (C)
Accomplishes the reverse effect of the heat engine

390. The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is

  1. (∂T/∂V)S = - (∂P/∂S)V
  2. (∂S/∂P)T = - (∂V/∂T)P
  3. (∂V/∂S)P = (∂T/∂P)S
  4. (∂S/∂V)T = (∂P/∂T)V

Correct answer: (D)
(∂S/∂V)T = (∂P/∂T)V

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