Kerala PSC Previous Years Question Paper & Answer

Question Code : A


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'JUNIOR INSTRUCTOR - LABORATORY ASSISTANT - CHEMICAL PLANT' And exam conducted in the year 2016. And Question paper code was '055/2016/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: 8 out of 11
Excerpt of Question Code: 055/2016/OL

C:-observation of the condition of dye -filament which become wavy or irregular at the onset
of the turbulence.

D:-measurement of intensity of turbulence
Correct Answer:- Option-C
Question68:-The laminar flow is characterized by:
A:-irregular motion of fluid particles
-fluid particles moving in layers parallel to the boundary layer
C:-high Reynolds number of flow
D:-existence of eddies
Correct Answer:- Option-B
Question69:-The parameters which determines the friction factor for turbulent flow in rough pipe are:
A:-Froude number and relative roughness
B:-Froude number and Mach number
C:-Reynolds number and relative roughness
D:-Mach number and relative roughness
Correct Answer:- Option-C
Question70:-In orifice flow, the vena contracta represents:
A:-the section where the jet has maximum flow area
B:-the location where the jet area is minimum , the streamlines parallel and the pressure atmospheric
C:-the section where the pressure is above atmospheric
D:-the opening of orifice itself
Correct Answer:- Option-B
Question71:-What is the major use of carbon molecular sieve?
A:-separation of lower hydro-carbons
-adsorption of organics from drinking water
C:-separation of air to produce nitrogen
D:-separation of suspended impurities from air
Correct Answer:- Option-C
Question72:-Rotameter is used for measuring:
A:-density of fluids
B:-velocity of fluids in pipes
C:-viscosity of fluids
D:-discharge of fluids
Correct Answer:- Option-D
Question73:-Joule-sec is the unit of
A:-thermal conductivity
nematic viscosity
C:-universal gas constant
D:-planck’s constant
Correct Answer:- Option-D
Question74:-Why are baffles provided in heat exchangers?
A:-To reduce heat transfer rate
B:-To increase heat transfer rate
C:-To remove dirt
D:-To reduce vibration
Correct Answer:- Option-B
Question75:-Kinetic energy of a gas molecule is zero at :
Correct Answer:- Option-D
Question76:-Cavitation will takes place in case of :
A:-pelton wheel
B:-rotary pump
C:-reciprocating pump
D:-centrifugal pump
Correct Answer:- Option-D
Question77:-Fog is formed due to:

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