Non-isothermal gas reaction
Variable fluid density systems
Constant fluid density systems
Gas reactions with changing no. of moles
✅ The correct answer is option C.
Chemical Engineering MCQs
The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is
0.5
1
2
3
✅ The correct answer is option C.
The use of space time is preferred over the mean residence time in the design of a/an
Batch reactor
Ideal tubular-flow reactor
Slurry reactor
CSTR
✅ The correct answer is option B.
In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will
Remain the same
Be halved
Also be doubled
Become one fourth
✅ The correct answer is option A.
A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?
Large reactor followed by smaller one
Smaller reactor followed by larger one
Either of the arrangement A or B will give the same yield
Data insufficient, can
✅ The correct answer is option C.
A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be
2τ
0.5τ
τ/0.693
0.693τ
✅ The correct answer is option A.
__________ catalytic reaction is involved in the thermal cracking of gas oil.
Homogeneous
Homogeneous non
Heterogeneous
Heterogeneous non
✅ The correct answer is option A.
When the reaction occurs in the diffusion controlled region, the apparent activation energy as measured is only __________ the true value.
Twice
Half
Equal
None of these
✅ The correct answer is option B.
The performance equations for constant density systems are identical for
P.F.R. and backmix reactor
P.F.R. and batch reactor
P.F.R, batch reactor and backmix reactor
Batch reactor and backmix reactor
✅ The correct answer is option B.
In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.
Reversible exothermic
Irreversible exothermic
Irreversible endothermic
Reversible endothermic
✅ The correct answer is option D.