Chemical Engineering Thermodynamics

281. Maximum work that could be secured by expanding the gas over a given pressure range is the _________ work.

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

Correct answer: (A)
Isothermal

282. Maxwell's relation corresponding to the identity, dH = dS = Vdp + ∑μi dni is

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

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

283. Measurement of thermodynamic property of temperature is facilitated by _________ law of thermodynamics.

  1. 1st
  2. Zeroth
  3. 3rd
  4. None of these

Correct answer: (B)
Zeroth

284. Melting of ice exemplifies a/an

  1. Adiabatic process
  2. Endothermic reaction
  3. Exothermic reaction
  4. Process involving a chemical reaction

Correct answer: (B)
Endothermic reaction

285. Melting of ice is an example of an _________ process.

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

Correct answer: (B)
Isothermal

286. Melting of wax is accompanied with _________ in entropy.

  1. Increase
  2. Decrease
  3. No change
  4. None of these

Correct answer: (A)
Increase

287. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is

  1. 1
  2. 2
  3. 3
  4. 4

Correct answer: (B)
2

288. Molar heat capacity of water in equilibrium with ice at constant pressure is _________ Kcal/kg mole. °K

  1. 0
  2. 50
  3. 100

Correct answer: (B)

289. Mollier chart is a _________ plot.

  1. Pressure vs. enthalpy
  2. Pressure vs. volume
  3. Enthalpy vs. entropy
  4. Temperature vs. entropy

Correct answer: (C)
Enthalpy vs. entropy

290. Mollier diagram is a plot of

  1. Temperature vs. enthalpy
  2. Temperature vs. enthalpy
  3. Entropy vs. enthalpy
  4. Temperature vs. internal energy

Correct answer: (C)
Entropy vs. enthalpy

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