Increases
Decreases
Remains unaffected
Can either increase or decrease (depends on the type of catalyst)
✅ The correct answer is option C.
Chemical Engineering MCQs
A batch reactor is suitable for
Achieving cent percent conversion of reactants into products
Large scale gaseous phase reactions
Liquid phase reactions
Obtaining uniform polymerisation products in highly exothermic reactions
✅ The correct answer is option C.
Dew point of an air-water vapor mixture
Decreases with decrease in pressure
At constant humidity & total pressure is fixed
Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
All of the above
✅ The correct answer is option D.
What is the dispersion number for a CSTR?
0
1
< 1
∞
✅ The correct answer is option D.
The catalyst in a first order chemical reaction changes the
Equilibrium constant
Activation energy
Heat of formation of the product
Heat of reaction
✅ The correct answer is option B.
With increase in temperature, the leaching rate increases because of the
Increased diffusivity
Decreased viscosity of liquid
Both A and B
Neither A nor B
✅ The correct answer is option C.
Which of the following will give maximum gas conversion?
Fixed bed reactor
Fluidised bed reactor
Semi-fluidised bed reactor
Plug-flow catalytic reactor
✅ The correct answer is option C.
In an ideal tubular-flow reactor
There is no mixing in longitudinal direction
Mixing takes place in radial direction
There is a uniform velocity across the radius
All of the above
✅ The correct answer is option D.
Which of the following is an undesirable property in a tower packing?
Large surface per unit volume
Large free cross-section
Low weight per unit volume
Large weight of liquid retained
✅ The correct answer is option D.
If ‘n’ is the order of reaction, then unit of rate constant is
1/(time)(concentration)n – 1
(time)-1 (concentration)n – 1
(time)n – 1 (concentration)
None of these
✅ The correct answer is option A.