A. Solids
B. Liquids
C. Gases
D. All of the above
✅ The correct answer is option A.
Chemical Engineering MCQs
A solid is transformed into vapour without going to the liquid phase at
A. Triple point
B. Boiling point
C. Below triple point
D. Always
✅ The correct answer is option A.
With increase in compression ratio, the efficiency of the otto engine
A. Increases
B. Decreases
C. Remains constant
D. Increases linearly
✅ The correct answer is option A.
Free energy changes for two reaction mechanism ‘X’ and ‘Y are respectively – 15 and – 5 units. It implies that X is
A. Slower than Y
B. Faster than Y
C. Three times slower than Y
D. Three times faster than Y
✅ The correct answer is option B.
The most important application of distribution law is in
A. Evaporation
B. Liquid extraction
C. Drying
D. Distillation
✅ The correct answer is option B.
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.
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.
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.
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.
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.