Removal of one of the products regularly
Increase in the concentration of oneof the products
Increase in the concentration of one of the reactants
None of these
✅ The correct answer is option B.
Chemical Engineering MCQs
Ionic reactions occur in
Solid state only
Liquid state only
Solutions
Any state
✅ The correct answer is option C.
Rate of a chemical reaction is not affected by the
Catalyst
Temperature
Reactant’s concentration
Number of molecules of reactants taking part in the reaction
✅ The correct answer is option D.
The half life period of a first order reaction is
Always the same irrespective of the reaction
Dependent on initial concentration of the reactants
Proportional to the initial concentration of reactants
Half the specific rate constant
✅ The correct answer is option B.
Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇋ 2NH₃.
Increases
Decreases
Remains unchanged
Unpredictable from the data
✅ The correct answer is option A.
For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a
Batch reactor is preferred over a single CSTR for high yield
Tubular reactor is preferred over a single CSTR for high yield
Both A and B
Single CSTR is the most suitable
✅ The correct answer is option C.
An example of autothermal reactor operation is
Sulphur dioxide oxidation
Ethylene oxidation
Benzene oxidation
Ammonia synthesis
✅ The correct answer is option B.
The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is
0.5
-0.5
1
1.5
✅ The correct answer is option B.
The dispersion number of perfect mixed flow is
0
> 150
∞
< 2100
✅ The correct answer is option C.
An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction
Is maximum at the inlet of the reactor
Goes through a maximum along the length of the reactor
Goes through a minimum along the length of the reactor
Is maximum at the exit of the reactor
✅ The correct answer is option A.