A. Evaporation
B. Liquid extraction
C. Drying
D. Distillation
✅ The correct answer is option B.
Engineering
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4232. For a multicomponent system, the term chemical potential is equivalent to the
A. Molal concentration difference
B. Molar free energy
C. Partial molar free energy
D. Molar free energy change
✅ The correct answer is option C.
4233. A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is
A. 349
B. 651
C. 667
D. 1000
✅ The correct answer is option A.
4234. Mollier chart is a __________ plot.
A. Pressure vs enthalpy
B. Pressure vs volume
C. Enthalpy vs entropy
D. Temperature vs entropy
✅ The correct answer is option C.
4235. Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.
A. Decreases
B. Increases
C. Remains constant
D. Decreases logarithmically
✅ The correct answer is option B.
4236. Partial molar free energy of an element A in solution is same as its
A. Chemical potential
B. Activity
C. Fugacity
D. Activity co-efficient
✅ The correct answer is option A.
4237. Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes.
A. Reaction mechanism
B. Calculation of rates
C. Energy transformation from one form to the another
D. None of these
✅ The correct answer is option C.
4238. Which is not constant for an ideal gas?
A. (∂P/∂V)T
B. (∂V/∂T)P
C. (∂P/∂V)V
D. All of the above
✅ The correct answer is option A.
4239. The gas law (PV = RT) is true for an __________ change.
A. Isothermal
B. Adiabatic
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
4240. Free energy change at equilibrium is
A. Zero
B. Positive
C. Negative
D. Indeterminate
✅ The correct answer is option A.