Chemical Engineering MCQs

A. 1/2
B. 1/3
C. 1/9
D. 3

A. Mixed reactor is always larger than the plug-flow reactor
B. Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
C. Reactor size is independent of the type of flow
D. Density variation during reaction affects design

A. 2o3 ⇌ 3o2
B. N2 + o2 ⇌ 2no
C. 2no2 ⇌ n2o4
D. 2so2 + o2 ⇌ 2so3

A. Continuous reaction
B. Unreacted core
C. Both a. and b.
D. Neither a. and b.

A. The rate of disappearance of ‘y’ is equal to the rate of appearance of ‘z’
B. The rate of disappearance of ‘y’ is equal to the rate of disappearance of ‘x’
C. Three times the rate of disappearance of ‘x’ is equal to the rate of appearance of ‘z’
D. The rate of disappearance of ‘x’ is equal to the rate of appearance of ‘z’

A. Activation energies of a reaction
B. Reaction mechanism
C. Extent of non-ideal flow in the vessel
D. None of these

A. Temperature only
B. Pressure only
C. Temperature and pressure
D. Ratio of reactants

A. Increases
B. Decreases
C. Decreases exponentially
D. Can either increase or decrease; depends on the frequency factor

A. 1/(time)n
B. (concentration)1 – n/(time)
C. (concentration)n – 1/(time)
D. None of these

A. Improves the activity of a catalyst
B. Acts as a catalyst support
C. Itself has very high activity
D. All a., b. and c.