Blood
Saliva
Intestine
Gland
✅ The correct answer is option B.
Chemical Engineering MCQs
A space velocity of 5 hr⁻¹ means that
Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
After every 5 hours, reactor is being filled with the feed
Cent per cent conversion can be achieved in at least 5 hours
A fixed conversion of a given batch of feed takes 5 hours
✅ The correct answer is option A.
Which of the following does not produce a change in the value of rate constant of a reaction?
Pressure
Temperature
Concentration and catalyst
None of these
✅ The correct answer is option C.
reactant and product streams). The amount of heat to be removed is
2/3 kW
1kW
5/3 kW
4kW
✅ The correct answer is option C.
For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to
1
0.5
0.1
0
✅ The correct answer is option C.
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by
keff = k + kg
keff = (k+ kg)/2
keff = (kkg)1/2
1/keff = 1/k + 1/kg
✅ The correct answer is option D.
With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.
Increases
Decreases
Remains unaffected
Unpredictable from the data
✅ The correct answer is option A.
For multiple reactions, the flow pattern within the vessel affects the
Size requirement
Distribution of reaction products
Both A and B
Neither A nor B
✅ The correct answer is option C.
In a continuous flow stirred tank reactor, the composition of the exit stream
Is same as that in the reactor
Is different than that in the reactor
Depends upon the flow rate of inlet stream
None of these
✅ The correct answer is option A.
A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant)
∝ CA
∝ 1/CA
Independent of temperature
None of these
✅ The correct answer is option D.