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.
D:-Ethylene propylene natural rubber
Correct Answer:- Option-A
Question38:-Select inorganic rubber among the following
A:-Nitrile rubber
B:-Natural rubber
C:-Butyl rubber
D:-Silicon rubber
Correct Answer:- Option-D
Question39:-An example for a coplolymer
A:-Nitrile rubber
B:-Natural rubber
C:-Butyl rubber
D:-Silicon rubber
Correct Answer:-Question Cancelled
Question40:-Tripsometer is used to determine
A:-Abrasion resistance
B:-Cure time
C:-Rebound resilience
D:-Compression set
Correct Answer:- Option-C
Question41:-How much rolling resistance should be reduced to get 1% fuel
efficiency?
A:-2% to 3%
B:-3% to 5%
C:-5% to 7%
D:-7% to 9%
Correct Answer:- Option-C
Question42:-Which method is preferred to make rubber products if less heat and
more pressure is required for curing?
A:-Open curing in autoclaves
B:-Water curing
C:-Hot air curing
D:-All of these
Correct Answer:- Option-B
Question43:-Which material is better if we required a short circuit temperature up
to 250°C in power cables?
A:-Crosslinked polyethylene