Kerala PSC Previous Years Question Paper & Answer
Page:16
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Laboratory Assistant Common Facility Service Centre' And exam conducted in the year 2023. And Question paper code was '019/2023/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.
Question83:-Charles Goodyear invented the vulcanization of rubber in
A:-1941
B:-1939
C:-1940
D:-1938
Correct Answer:- Option-B
Question84:-Ildentify the mixing mill size most suitable for laboratory uses
A:-6” X 12” or 6” x 13”
B:-3” x 7” or 3” x 8”
C:-8” x 16” or 10” x 20”
D:-10” x 20” or 12” x 24”
Correct Answer:- Option-A
Question85:-Insert imbedded rubber articles in multiple numbers in a single
moulding is usually accomplished using technique.
A:-Compression moulding
B:-Transfer moulding
C:-Injection moulding
D:-Flash less moulding
Correct Answer:- Option-B
Question86:-PET bottles are manufactured using process.
A:-Extrusion Blow Moulding
B:-Injection Blow Moulding
C:-Co-axial Blow Moulding
D:-Stretch Blow Moulding
Correct Answer:- Option-D
Question87:-Choose the ASTM standard for vulcanized rubber properties in tension
A:-ASTM D 624
B:-ASTM D 412
C:-ASTM D 1415
D:-ASTM D 395
Correct Answer:- Option-B
Question88:-From 3° arc oscillating disc rheograph, the scorch safety time is taken
as time taken for unit rise in torque from minimum.
A:-5
B:-3
C:-7