Kerala PSC Previous Years Question Paper & Answer

Title : Microbiologist - Food Safety (Govt. Analytical Laboratory)
Question Code : A


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Microbiologist - Food Safety (Govt. Analytical Laboratory) ' And exam conducted in the year 2022. And Question paper code was '27/2022'. 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.

page: 14 out of 16
Excerpt of Question Code: 27/2022













are primary group of organisms involved in sauerkraut fermentation.
A) Yeast B) Lactic acid bacteria
C) Fungus D) Spore forming bacteria

Antimicrobial activity of hydrogen peroxide is attributed to
A) Strong oxidizing effect on the bacterial cell

) Destruction of basic molecular structures of cell proteins
) Both (A) and (B)

Secondary metabolites are produced during phase of growth.
A) Exponential B) Stationary C) Trophophase D) Lag
Inner surface of bioreactors are coated with to limit wall growth.
A) Teflon B) Steel C) Brass D) Glass

Carbon source that can be used for production of single cell protein
A) Whey B) Cellulose C) Hydrocarbons 0) Allof these

is a technique where modified fermenters up to 100 dm are gently stirred
and broth continuously removed from the vessel and passed through stainless steel or
ceramic filter.

A) Perfusion culture B) Hollow filter chamber

C) Radial flow fermenter D) Stirred fermenter

Yeast is one of the commercially important source of lactase.
A) Saccharomyces boulardi B) Torulopsis

C) Pichia D) Klyveromyces lactis

are used for the circulation of steam and cooling water during the heating
and cooling cycles of sterilization of the fermenter.

A) Baffles B) Jacket C) Sparger D) Agitator
100 pounds of yeast can produce tonnes of protein within 24 hrs.
A) 2.5 B) 25 C) 250 D) 500
An optimum temperature above °C is usually preferred for industrially
important micro-organisms as it can reduce cooling cost.
A) 30 B) 40 C) 50 D) 37
Workers in factory that work with amylase are at an increased risk of
A) Arteriosclerosis 8) Diabetes C) Asthma D) Ascites

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