Vinayaka Missions University 2008 B.E Chemical Engineering CHEMICAL REACTION ENGINEERING : (Correspondence) - Question Paper

B.E. DEGREE exam JULY 08
B.E. (CHEMICAL ENGINEERING)
CHEMICAL REACTION ENGINEERING
Time: three Hrs. Max. Marks: 75
part – A
ans all the questions: 10 x two = 20
1. Feasibility of reactions
2. Stimulus - response technique to obtain RTD in reactors.
3. Non-ideal flow trends ins real reactor systems
4. Zero order reactions
5. Promoters and Inhibitors
6. Auto-catalytic reactions
7. Semi-batch reactors and utility
8. Write a short note on Recycle reactors.
9. elaborate the thermodynamic restrictions on the progress of
reversible reactions?
10. describe legal regulations of Mass action.
part – B
ans any 5 Questions: five x five = 25
11. Compare the performance of fluidized-bed & trickle-bed reactors
12. explain the thermodynamic restrictions on the progress of reversible
reactions.
13. explain the differences ranging from chemisorptions and physical
adsorption and their role in catalytic reactions.
14. discuss Pore quantity and pore size distribution in catalysts
15. What do you understand by Space time and holding time of
flow reactors?
16. Differentiate ranging from an elementary and a non-elementary
reaction with suitable examples.
17. The homogeneous gas-phase reaction A K3B has a rate
constant of k = 0.5 min-1. find an expression for the total
pressure in a constant quantity reactor as a function of time t
(min) and the initial pressure po. What will be the effect of
50% inserts current initially along with pure A?
18. A homogeneous liquid phase reaction A M R takes place
with 50% conversion in a mixed reactor. The reaction is
elementary 2nd order. What will be the conversion if
the original reactor is changed by 1 which is 6 times as
large as the original reactor - all else remaining unchanged?
part – C
ans an ans any 2 Questions: two x 15 = 30
19. Briefly explain the models to discuss the non-ideal
behavior of tubular reactors. define 1 experiment to
evaluate the parameters in any 1 of the models.
20. discuss the various models for gas-solid non-catalytic
reactions of the type, A(g) + bB(s) K E(g) + F(s)
21. explain Arrhenius, Collision, and Transition state theories
of temperature dependence of reaction rates.

Earning:   Approval pending.