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.
Chemical Reaction Engineering MCQs
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.
Study of chemical kinetics is the easiest in the case of __________ reactions.
Irreversible
Reversible
Surface
Side
✅ The correct answer is option A.
An isothermal aqueous phase reversible reaction, P ⇋ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the
0.8
1.33
1.6
2.67
✅ The correct answer is option C.
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for
Fast reactions in catalyst of small pore diameter
Fast reaction in catalyst of large pore diameter
Slow reactions in catalyst of small pore diameter
Slow reactions in catalyst of large pore diameter
✅ The correct answer is option C.
At a given temperature, K₁, K₂ and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g), CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) CH₄(g) + 2H₂O(g) ⇋ CO₂(g) + 4H₂(g) Then K₁, K₂ and K3 are related as:
K3 = K₁.K₂
K3 = (K₁.K₂)0.5
K3(K₁+K₂)/2
K3 = (K₁.K₂)2
✅ The correct answer is option A.
A photochemical reaction is __________ light.
Initiated by
Accompanied with emission of
Catalysed by
Used to convert heat energy into
✅ The correct answer is option A.
Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion.
Decrease
Increase
No change
Either A or B, depends on the type of reaction
✅ The correct answer is option C.