Kerala PSC Previous Years Question Paper & Answer
Page:8
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Tradesman (Polymer Technology)' And exam conducted in the year 2023. And Question paper code was '084/2023/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.
B:-KOH number
C:-Viscosity
D:-Cure rate
Correct Answer:- Option-A
Question41:-As per ASTM D395 for the determination of compression set under
constant force in air, a force of is applied to the specimen for a set time at a
set temperature.
A:-1.8 kN
B:-1 kN
C:-2 kN
D:-3 kN
Correct Answer:- Option-A
Question42:-ISNR grade which doesn't show storage hardness
A:-ISNR-50
B:-ISNR-20
C:-ISNR-5
D:-ISNR-3 CV
Correct Answer:- Option-D
Question43:-Higher VFA number in a natural rubber latex indicates
A:-Loss of colloidal stability
B:-High level of Ammonia
C:-Low level of Ammonia
D:-Improved colloidal stability
Correct Answer:- Option-A
Question44:-Viscosity of latex is measured using
A:-ODR
B:-Brookfield Viscometer
C:-Mooney Viscometer
D:-All the above
Correct Answer:- Option-B
Question45:-Magnesium content of latex is estimated by direct titration with
using Erichrome
Black T as indicator.
A:-0.02 ೫ ೫೬೦೫, 5010೧
B:-0.1 N aci
C:-0.005 M EDTA Solution
D:-0.05 N aon Solution