7871. The heat of reaction
Depends on the pressure only
Depends on the mechanism of reaction only
Depends on both pressure and mechanism of reaction
Is independent of the mechanism of reaction
✅ The correct answer is option D.
Chemical Engineering
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7872. __________ is the response curve for a step input signal from a reactor.
S-curve
C-curve
I-curve
None of these
✅ The correct answer is option B.
7874. For a tubular flow reactor with uniform concentration and temperature, the independent variable is
Time
Length
Diameter
None of these
✅ The correct answer is option B.
7875. Molecularity of an elementary reaction, P + Q → R + S is
1
2
3
4
✅ The correct answer is option D.
7876. In an ideal P.F.R. at steady state conditions
The composition of reactants remains constant along a flow path
The conversion of the reactant varies from point to point along a flow path
There is no lateral mixing of fluid
There may be diffusion along the flow path
✅ The correct answer is option B.
7877. If the time required to change the concentration of reactant to half its original value is independent of the initial concentration, the order of reaction is
Zero
One
Two
Three
✅ The correct answer is option B.
7878. In case of a P.F.R., there
May be lateral mixing of fluid
Should not be any mixing along the flow path
Both A and B
Neither A nor B
✅ The correct answer is option C.
7879. For reaction, P + 2 → 3R, molar rate of consumption of P is
Double of that of Q
Same as that of Q
Half of that of Q
2/3rd of that of Q
✅ The correct answer is option C.
7880. A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are
Equal in size
Of different sizes
Of such size that the ratio of their volumes is < 5
None of these
✅ The correct answer is option A.