Kerala PSC Previous Years Question Paper & Answer
Page:9
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Assistant Professor (Chemical Engineering)' And exam conducted in the year 2023. And Question paper code was '026/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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QuestionS8-The volumetric flow rate during constant pressure filtration is dt
where V is the total volume of fitrate collected in time t and KC ¢ and Qg are constants. If
V= Llitre at t = 41.3 s and V= 2.0 litre at t = 108.3, then KC, value is
۸3
86
28.7
51.4
Correct Answer:- Option-C
Question59:-Match the equipment in Column A with the corresponding process in Column B :
Column A ‘Column B:
P. Centrifugal sitter | Mixing
Q. Bowl mill Sedimentation
R. Gravity thickener IM, Screening
S. Two-arm kneader IN. Grinding
ಹಟ, ९-७४, Rell, 5-॥
8:-9॥, 01४, Ral, S-1
1೪, ೦೨, ೩.೪, 01
D-PIV, QUI, RA, SH
Correct Answer:- Option-8
Question60:-Crtical speed of a ball mill depends on
AsThe radius of the mill and the radius of the particles
“The radius of the mill and the density of the particles
C=The radius of the balls and the radius of the particles
:-The radius of the balls and the radius of the mill
Correct Answer:- Option-D
Question6l =-The E-curve for a non-ideal reactor defines the fraction of fluid having age between t and tedt
AcAt the inlet
BrAt the outlet
xn the reactor
D:Averaged over the inlet and outlet
Correct Answer:- Option-B
‘Question62:-A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the extemal mass transfer co-efficients are k and Kg respectively.
The effective rate constant (reff)is given by
ಸಸಯ
(५५ )
டட ணன்
ಯ್ಯ
५५ =(kka)?
تد
20000
५५५ =+
८०८५०४५० ००५०-०
Qvestion63;-The reaction 2A + B + 2C occurs on a catalyst surface, The reactants A and. diffuse to the catalyst surface and get converted completely tothe product C which diffuses
Back, Steady state molar flux of A.B and C related by
N4=2N_=No
(മം
1
ப ப
Correct Answer:- Option-C
‘Question64:-For a solid-catalyzed reaction, the Thiele modulus is proportional to
intrinsic reaction rate
Correct Answer Option-A
Question65:-Which of the following can change if only the catalyst is changed for a reaction system ?
AcEnthalpy of reaction
BrActivation energy
C:-Free energy of the reaction