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 'junior Lab Assistant' And exam conducted in the year 2023. And Question paper code was '006/2023'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. 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.
. Acid present in chromic acid solution is
A) Phosphoric Acid
C) Hydrochloric Acid
06/23
B) Nitric Acid
D) Sulphuric Acid
. Beer-Lambert law is applied in the instrument
A) Microscope
C) pH meter
A) °C B) 56°C
B) Colorimeter
D) Incubator
3. Laboratory incubator is usually set with a temperature of
C) 100°C
D) 37°C
. Which of the following is used to keep chemicals free from water ?
A) Hot air oven
C) Incubator
. Bleaching powder is prepared from
A) Benzaldehyde
C) Hypochlorite
B) Desiccators
D) Seitz filter
B) Gluteraldehyde
D) Sodium chloride
. Solution in which no more salt is able to dissolve is
A) Saturate solution
C) Molar solution
B) Percent solution
D) Standard solution
. Which of the following is an inflammable chemical ?
A) Xylene
C) Alcohol
. Reverse osmosis is used to prepare
A) Disinfectants
C) Distilled water
B) Chloroform
D) All the three
B) Deionised water
D) None of these
. Example for a chemical that is kept under water
A) Sodium
C) Calcium carbonate
B) Picric acid
D) Sodium hypochlorite