Kerala PSC Previous Years Question Paper & Answer
Page:6
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.
C:-Creaming
D:-None of the these
Correct Answer:- Option-B
Question27:-Choose wrong statement among the following
(i) Elastomers exhibits slow recovery after extension
(ii) Elastomers can be vulcanised
(111) Elastomeric properties are affected by the Tg
(111) Mechanical properties of elastomers are due to cross-linked, long-chain,
flexible polymer molecules.
A:-Only (i)
B:-(ii) and (iii)
C:-(iii) and (iv)
D:-(ii) and (iv)
Correct Answer:- Option-A
Question28:-The polymeric materials, which combine the processability of
thermoplastics and the functional performance of vulcanised rubbers are called
A:-Thermoplastics
B:-Elastomer
C:-Thermoplastic elastomer
D:-None of these
Correct Answer:- Option-C
Question29:-Polychloroprene rubber is popularly known as
A:-Polynorbornene
B:-Neoprene
C:-Butyl rubber
D:-Nitrile rubber
Correct Answer:- Option-B
Question30:-Which synthetic rubber is also commonly known as Hypalon
A:-Styrene butadiene rubber
B:-Polychloroprene rubber
C:-Nitrile rubber
D:-Chlorosulphonated polyethylene
Correct Answer:- Option-D
Question31:-Example for flame retardant used in rubber compounding
A:-Antimony compounds
B:-Fluorocarbons
C:-Amines
D:-None of these