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 'Laboratory Assistant (Dairy/ CFP) - Kerala Co-operative Milk Marketing Federation Ltd ' And exam conducted in the year 2022. And Question paper code was '081/2022'. 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.
081/22
43. Which among the following radioactive isotope is commonly used in Radioimmunoassay ?
A) Sulphur-35 B) Phosphorus-32
C) lodine-125 D) Nitrogen-14
44. Identify the solvent used for the process of defatting in cold extraction.
A) Petroleum ether B) Ethyl acetate
C) Ethanol D) Water
45. Blocking agent is used in western blotting. Identify the purpose.
A) Blocks the transfer of protein from gel to membrane
B) Blocks the binding of antibody to the membrane
C) Blocks the binding of primary and secondary antibody
)
D) Blocks non-specific secondary antibody
46. Which among the following technique makes use of immunofluorescence ?
A) Confocal microscopy B) RIA
C) ELISA D) Electron microscopy
47. \dentify the constituents in the milk protein.
A) Whey proteins B) Casein
C) Ferritin D) Both A) and B)
48. The protein content can be measured using which among the following methods ?
A) Kjeldahl method 8) Gerber’s method
C) Rose-Gottlieb’s method D) Babcok’s method
49. The class of antibody that is expressed on the surface of B-lymphocytes is
A) IgA B) IgE C) IgG D) IgM
50. Identify the enzyme used in the technique of ELISA.
A) Horse radish peroxidase B) Tyrosinase
C) Lactate dehydrogenase D) Chymotrypsin