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.Management Sciences
Category: Chemical Reaction
From collision theory, the reaction rate constant is proportional to_________________?
A. exp (-E/RT)
B. exp (-E/2RT)
C. √T
D. Tm exp (-E/RT)
Rate constant ‘k’ and absolute temperature ‘T’ are related by collision theory (for bimolecular) as______________________?
A. k ∝ T1.5
B. k ∝ exp(-E/RT)
C. k ∝ √T
D. k ∝ T
The sequence in which three CSTR’s of volumes 5, 10 and 15 m3 will be connected in series to obtain the maximum production in a second order irreversible reaction is ____________________?
A. 15, 10, 5
B. 5, 10, 15
C. 10, 5, 15
D. 10, 15, 5
The unit of frequency factor in Arrhenius equation is_______________?
A. Same as that of rate constant
B. Same as that of activation energy
C. Dimensionless
D. None of these
A batch reactor is_______________?
A. Suitable for gas-phase reactions on commercial scale
B. Suitable for liquid phase reactions involving small production rate
C. Least expensive to operate for a given rate
D. Most suitable for very large production rate
In an ideal tubular-flow reactor_________________?
A. There is no mixing in longitudinal direction
B. Mixing takes place in radial direction
C. There is a uniform velocity across the radius
D. All A., B. and C.
When a catalyst increases the rate of chemical reaction, the rate constant_____________________?
A. Decreases
B. Increases
C. Remain constant
D. Become infinite
The value of Steric factor ‘P’ in the equation k = PZeE/RT usually ranges from ______________________?
A. 1.0 to 10-8
B. 1.1 to 102
C. 0.1 to 0.9
D. None of these
Non-catalytic fluid-solid reactions are represented by _______________ model?
A. Continuous reaction
B. Unreacted core
C. Both A. and B.
D. Neither A. and B.
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