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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 2
1.
When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is
> 1
< 1
1
0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In an ideal tubular-flow reactor
there is no mixing in longitudinal direction.
mixing takes place in radial direction.
there is a uniform velocity across the radius.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?
1.6
2
2.24
2.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
__________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction.
Gas film diffusion
Ash diffusion
Chemical reaction
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
An autothermal reactor is
most suitable for a second order reaction.
most suitable for a reversible reaction.
completely self-supporting in its thermal energy requirements.
isothermal in nature.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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