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 '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.
C:-Peroxide vulcanisation
D:-metal oxide vulcanisation
Correct Answer:- Option-C
Question38:-The materials used to ensure scorch safety of the rubber compound
A:-Processing aids
B:-Retarders
C:-Antioxidants
D:-Tackifiers
Correct Answer:- Option-B
Question39:-The strong antidegradants which discolour and stain the material are
A:-Phenolic compounds
B:-Amines
C:-Phosphites
D:-None of the above
Correct Answer:- Option-B
Question40:-An example for chemical plasticizer is
A:-xylyl mercaptan
B:-zinc oxide
C:-diphenyl guanidine
D:-stearic acid
Correct Answer:-Question Cancelled
Question41:-Addition of increases hardness and modulus of the
vulcanisate.
A:-Plasticisers
B:-Blowing agents
C:-Reinforcing fillers
D:-Extenders
Correct Answer:- Option-C
Question42:-The chemical used to reduce the flammability of a vulcanisate
A:-Azo compounds
B:-Antimony compounds
C:-Fluoro carbons
D:-Titanium dioxide
Correct Answer:- Option-B
Question43:-The initial tensile properties are better for a rubber vulcanisate with