Kerala PSC Previous Years Question Paper & Answer

Title : Instructor Grade I in Chemical Engineering (Engineering Colleges) - Technical Education
Question Code : A

Page:7

Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Instructor Grade I in Chemical Engineering (Engineering Colleges) - Technical Education' And exam conducted in the year 2022. And Question paper code was '67/2022/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. 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.

page: 7 out of 14
Excerpt of Question Code: 67/2022/OL

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Question46:-Pick correct statement for flow over a flat plate.
ஜரீர்‌ Prandtl number ಇ 3, thermal boundary layer is thicker than hydrodynamic boundary layer
ಮ Prandtl number > 1, thermal boundary layer is thicker than hydrodynamic boundary layer
C=For Prandtl number > 3, thermal boundary layer is thicker than hydrodynamic boundary layer

D:-For Prandt! number

hydrodynamic boundary layer is thicker than thermal boundary layer

Question47:-Use of baffles in shell and tube heat exchangers results in
‘AcIncrease in flow path and velocity of shell fluid
B:-Decrease in flow path and increase in velocity of shell fluid
C=Increase in flow path and velocity of tube fluid
Decrease in flow path and increase in velocity of tube fluid

Question48::When thick liquor is highly viscous, which of the following feeding methods is preferred 7
‘Ac Forward feed
B:-Backward feed
രില്‍ feed
D:-All the above give equal performance

Question49:-Steam consumption in an evaporator is given by
‘ACapacity x Economy
B:-Capacity/Economy
C:Economy/Capacity
D-None of the above

QuestionS0:-Compared to single effect evaporator, for multiple effect evaporators
‘AcBoth economy and capacity increase
B:-Economy reduces and capacity increases
C:Economy increases and capacity reduces
D:-Both economy and capacity reduce

QuestionS1:-Absorption factor is
‘Ac Ratio of slope of equilibrium line to that of operating line
B:-Ratio of slope of operating line to that of equilibrium line
C=Product of slope of equilibrium line and that of operating line
Sum of slope of equilibrium line and that of operating line

Question52:-Fick’s first law of diffusion is

0:44