Chemical Engineering MCQs

A. 0°c and 760 mm hg
B. 15°c and 760 mm hg
C. 20°c and 760 mm hg
D. 0°c and 1 kgf/cm2

A. √(2kt/m)
B. √(3kt/m)
C. √(6kt/m)
D. 3kt/m

A. Increases with increase in pressure
B. Decreases with increase in temperature
C. Is independent of temperature
D. None of these

A. System and surroundings pressure be equal
B. Friction in the system should be absent
C. System and surroundings temperature be equal
D. None of these

A. Critical temperature
B. Melting point
C. Freezing point
D. Both b. and c

A. Only δe = 0
B. Only δh =0
C. Δe = δh = 0
D. Dq = de

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

A. Is the most efficient of all refrigeration cycles
B. Has very low efficiency
C. Requires relatively large quantities of air to achieve a significant amount of refrigeration
D. Both b. and c

A. Free energy
B. Entropy
C. Refractive index
D. None of these

A. Ethyl chloride or methyl chloride
B. Freon-12
C. Propane
D. Nh3 or co2