Chemical Engineering MCQs

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

A. May be lateral mixing of fluid
B. Should not be any mixing along the flow path
C. Both a. and b.
D. Neither a. nor b.

A. A dirac delta function
B. A step function
C. A ramp function
D. None of the above

A. Be more in cstr than in pfr
B. Be more in pfr than in cstr
C. Be same in both cases
D. Depend on the temperature

A. 100
B. 150
C. 200
D. 225

A. Dxa/dt = k1 (1 – xa)2 (1 + 2xa)
B. Dxa/dt = k1 (1 – xa) (1 + 0.5xa)
C. Dxa/dt = k1 (1 – xa)
D. Dxa/dt = k1 (1 – xa)/(1 + xa)

A. Plug flow
B. Dispersion
C. Mixed flow
D. Tank in series

A. Plot of – ra vs ca is a straight line with slope k
B. Plot of – ra vs ca is a hyperbola
C. Rate of disappearance of reactant a is maximum, where ca = cb
D. Both b & c

A. More uniform operating conditions
B. Permits operation at the optimum temperature for a long reaction time
C. Higher overall selectivity for a first order consecutive reaction
D. All a., b. and c.

A. K/2
B. Ln k/2
C. Ln 2/k
D. Ln 0.5/k