Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) BT-Bio Technology 2020 December 5th Sem 70502 Chemical Engineering Principles Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (BT) (2012 to 2017) (Sem.?5)
CHEMICAL ENGINEERING PRINCIPLES
Subject Code : BTBT-501
M.Code : 70502
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
Express a pressure of 20 x 103 Pa in mm Hg.
2.
Define Raoult's law.
3.
What is Molecularity of the reaction?
4.
A reaction has a stoichiometric equation A + B 2R, state the order of the reaction.
5.
Define space time.
6.
Write the uses of following measurement :
a) pH
b) Viscosity
7.
State two disadvantages of continuous reactors.
8.
What are the advantages of cascade control?
9.
What is the ideal batch reactor?
10. Differentiate closed loop and open loop control.
1 | M-70502
(S2)-901
SECTION-B
11. A reaction was carried out in a batch reactor and the results are reported below. Calculate
the rate of the reaction.
Time, t (min)
0
10.0
30.0
% Conversion
19.8
46.7
74.0
12. List various advantages and disadvantages of :
a) Feed forward control system and
b) Feed Backward control system.
13. A plug flow reactor (2000 litre) processes an aqueous feed (100 litre per min) containing
reactant A (CA0 = 100 millimol/litre). This reaction is reversible and represented by
A R, r
1
.
min C
1
0 04
0 0
. 1min
C
A
A
R
Find the equilibrium conversion and the actual conversion of A in the reactor.
14. What are the factors affecting dynamic response of mercury thermometer?
15. What is calibration? State the methods for calibrating the measuring instrument.
SECTION-C
16. Reactant A(A R, CAO = 26 mol/m3), passes in steady flow through four equally size
mixed flow reactors in series
2 min . When steady state is achieved the
total
concentration of A is found to be 11, 5,2,1 mol/m3 in the four units, For this reaction,
what must be
so as to reduce CA from C
plug
AO = 26 to CAf = 1 mol/m3?
17. Define Semi-batch reactors. And state the advantages and disadvantages of batch reactor.
18. What are the desirable and undesirable properties of an instrument? How these properties
help in choosing the right instrument for a particular measurement?
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
2 | M-70502
(S2)-901
This post was last modified on 13 February 2021