Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Assistant Director (Plastic)' And exam conducted in the year 2023. And Question paper code was '139/2023/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:-Polyvinyl chloride
C:-Flurocarbon rubber
D:-All of these
Correct Answer:- Option-A
Question44:-Which is/are the effective method/methods to control the 'nerve'
during rubber processing?
A:-Use factice
B:-Using high structure furnace black
C:-Increase filler loading
D:-All of these
Correct Answer:- Option-D
Question45:-K-value of PVC material recommended in insulating material using in
low and medium voltage cables
A:-45 to 50
B:-50 to 60
C:-65 to 70
D:-70 to 75
Correct Answer:- Option-C
Question46:-Field used in injection bottle cap is
A:-Aluminium silicate
B:-Silica
C:-Barium sulphate
D:-Clay
Correct Answer:- Option-C
Question47:-Which is the preferred speed ratio of four roll calendar matachin where
both side topping can do?
A:-2:3:3:2
B:-2:3:2:3
C:-3:2:2:3
D:-3:2:3:2
Correct Answer:- Option-A
Question48:-Which is the optimal molar ratio of resorcinol to formaldehyde in nylon
coated fabric used in rubber compound?
A:-1:1 to 1:2
B:-1:2 to 1:3
C:-1.5:1 to 2
D:-1.5:2 to 1.5:3