Kerala PSC Previous Years Question Paper & Answer
Page:18
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.
Question94:-The moles of a solute in relation to the mass of the solution is known
as
A:-Molality
B:-Formality
C:-Normality
D:-Molarity
Correct Answer:- Option-A
Question95:-Choose the chemical that dissolves in water rises + ion concentration
in the solution
A:-Alkalis
B:-Solutes
C:-Acids
D:-Bases
Correct Answer:- Option-C
Question96:-The coagulum prepared for DRC determination of NR latex is dried at
in a hot air oven.
A:-70 + 2°C
B:-65 + 2°C
C:-90 + 2°C
D:-95 + 2°C
Correct Answer:- Option-A
Question97:-The indicator used in the determination of alkalinity of latex when 0.1
N HCI used as titrant
A:-Methyl orange
B:-Phenolphthalein
C:-Methylene blue
D:-Methyl red
Correct Answer:- Option-D
Question98:-The difference between DRC and TSC is known as
A:-Coagulum content
B:-Non-rubber content
C:-Sludge content
D:-Rubber content
Correct Answer:- Option-B
Question99:-During MST determination the mechanical stirring is done at
A:-14000 + 200 rpm
B:-12000 + 100 rpm