Chemical Engineering MCQs

A. Only f decreases
B. Only a decreases
C. Both f and a decreases
D. Both f and a increase

A. Positive
B. Negative
C. Zero
D. May be positive or negative

A. Decreases in all spontaneous (or irreversible) processes
B. Change during a spontaneous process has a negative value
C. Remains unchanged in reversible processes carried at constant temperature and pressure
D. All a, b. and c

A. 270
B. 327
C. 300
D. 540

A. 0
B. 1
C. 2
D. 3

A. Air cycle
B. Carnot cycle
C. Ordinary vapour compression cycle
D. Vapour compression with a reversible expansion engine

A. (df)t, p <0
B. (df)t, p = 0
C. (df)t, p > 0
D. (da)t, v >0

A. Increases
B. Decreases
C. Remains unchanged
D. Decreases linearly

A. Number of intermediate chemical reactions involved
B. Pressure and temperature
C. State of combination and aggregation in the beginning and at the end of the reaction
D. None of these

A. Molal concentration difference
B. Molar free energy
C. Partial molar free energy
D. Molar free energy change