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 'Workshop Instructor/ Instructor Grade II/ Demonstrator/ Draftsman Grade II in Polymer Technology' And exam conducted in the year 2023. And Question paper code was '099/2023/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:-only (ii) and (iv)
C:-only (i), (ii) and (iii)
D:-All of the above
Correct Answer:- Option-C
Question10:-Which among the following comes under the category of thermoplastic
polymers?
(i) Polystyrene
(ii) Bakelite
(iii) Nylons
(iv) Polyvinyl chloride
A:-Only (i) and (ii)
B:-Only (ii) and (iii)
C:-Only (i), (iii) and (iv)
D:-All of the above
Correct Answer:- Option-C
Question11:-Natural rubber is
A:-1, 2 polyisoprene
B:-cis-1,4 polyisoprene
C:-trans - 1,4 polyisoprene
D:-3, 4 polyisoprene
Correct Answer:- Option-B
Question12:-The angle of cut in a rubber tree for tapping of latex is
A:-25-302 to the vertical
B:-4-102 to the vertical
C:-25-302 to the horizontal
D:-4-102 to the horizontal
Correct Answer:- Option-C
Question13:-An example of yield stimulant for natural rubber latex is
A:-ammonia
B:-2-chloroethane phosphonic acid
C:-Sodium sulfite
D:-formaldehyde
Correct Answer:- Option-B
Question14:-Among the following which one is not a method for concentrating
natural rubber latex?
A:-centrifugation
B:-creaming
C:-evaporation