Kerala PSC Previous Years Question Paper & Answer
Page:13
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.
transition temperature (Tg)
C:-X and Y are melting points, but X is the Tm of a semi-crystalline material
and Y is the Tm of an almost perfect crystal
D:-X and Y are Tg (Glass transition temperatures), but X is the Tg of a semi-
crystalline material and Y is the Tg of an almost perfect crystal
Correct Answer:- Option-A
Question65:-Which of the following polymers would you except to be most suitable
for the production of a rubber car bumper guard?
A:-Atactic polystyrene (19 10090)
B:-A random ethylene/propylene copolymer (50/50 composition) Tg ~402C)
C:-Low density polyethylene
D:-High density polyethylene
Correct Answer:- Option-B
Question66:-Which of the following material is not made by injection molding?
A:-Nuts
B:-Tubes
C:-Cups
D:-Electrical fittings
Correct Answer:- Option-B
Question67:-Which one of the following is a condensation polymer?
A:-Nylon
B:-Polythene
C:-PVC
D:-Teflon
Correct Answer:- Option-A
Question68:-In blow molding, to inflate soft plastic, which medium is used?
A:-Air
B:-Water
C:-Oil
D:-Alcohol
Correct Answer:- Option-A
Question69:-Which of the following types of molecular structure are present in
thermosetting polymers?
A:-Linear polymers
B:-Branched polymers
C:-Cross-linked polymers
D:-Long chain polymers