Chemical Engineering Thermodynamics

491. Which of the following is not an intensive property?

  1. Molar heat capacity
  2. Internal energy
  3. Viscosity
  4. None of these

Correct answer: (B)
Internal energy

492. Which of the following is not correct for a reversible adiabatic process?

  1. TVγ-1 = constant
  2. p1-γ.TY = constant
  3. PVγ = constant
  4. None of these

Correct answer: (D)
None of these

493. Which of the following is true for Virial equation of state?

  1. Virial co-efficients are universal constants
  2. Virial co-efficients 'B' represents three body interactions
  3. Virial co-efficients are function of temperature only
  4. For some gases, Virial equations and ideal gas equations are the same

Correct answer: (C)
Virial co-efficients are function of temperature only

494. Which of the following is Virial equation of state?

  1. (p + a/V2)(V - b) = nRT
  2. PV = nRT
  3. PV = A + B/V + C/V2 + D/V3 + ...
  4. None of these

Correct answer: (C)
PV = A + B/V + C/V2 + D/V3 + ...

495. Which of the following liquid metals has the highest thermal conductivity?

  1. Molten sodium
  2. Molten lead
  3. Mercury
  4. Molten potassium

Correct answer: (A)
Molten sodium

496. Which of the following non-flow reversible compression processes require maximum work?

  1. Adiabatic process
  2. Isothermal process
  3. Isobaric process
  4. All require same work

Correct answer: (A)
Adiabatic process

497. Which of the following processes cannot be made reversible even under ideal condition of operation?

  1. Free expansion of a gas
  2. Compression of air in a compressor
  3. Expansion of steam in a turbine
  4. All (A), (B) & (C)

Correct answer: (A)
Free expansion of a gas

498. Which of the following represents the Virial equation of state?

  1. T = [RT/(V- b)] - [a/√T. V(V + b)]
  2. PV/RT = 1 + (B/V) + (C/V2) +
  3. n1u2 + μ2μ1 = 0
  4. None of these

Correct answer: (B)
PV/RT = 1 + (B/V) + (C/V2) +

499. Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system?

  1. Expansion valve
  2. Condenser
  3. Refrigerator
  4. Compressor

Correct answer: (D)
Compressor

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

  1. Doubling the absolute temperature as well as pressure of the gas
  2. Reducing pressure to one fourth at constant temperature
  3. Reducing temperature to one fourth at constant pressure
  4. Reducing the temperature to half and doubling the pressure

Correct answer: (B)
Reducing pressure to one fourth at constant temperature

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