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 'Assistant Scientist in Kerala State Pollution Control Board' And exam conducted in the year 2023. And Question paper code was '096/2023'. 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.
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096/23
Which process involves the movement of DNA segments from one location to another
within the genome, contributing to genetic variation in bacteria ?
A) Transcription B) Translation C) Transposition D) Translocation
Which of the following statements about soil microorganisms is false ?
A) All major microbial taxonomic groups can be found in soil
B) They never affect or change the physical characteristics of their soil microenvironment
C) They serve a very important role as decomposers in the carbon and nitrogen
cycles
D) Species of the genus Clostridium are important human pathogens found in soil
Which of the following tests is used to detect the presence of specific pathogens
such as Salmonella and Shigella in water samples ?
A) Membrane filter test B) Heterotrophic plate count
C) Serological test D) Polymerase Chain Reaction (PCR)
Which among the following diseases is caused by a fungus that is primarily transmitted
through inhalation of fungal spores in the air ?
A) Scrapie B) Histoplasmosis C) Ehrlichiosis D) Listeriosis
Which among the following is a sulphate-reducing bacterium ?
A) Desulfovibrio B) Desulfomonas
C) Desulfotomaculum D) All of the above
Which of the following is an example of amensalism in microbial interactions ?
A) Nitrogen-fixing bacteria providing fixed nitrogen to plants
B) Biofilm formation by bacteria in a nutrient-rich environment
C) Antibiotic production by bacteria inhibiting the growth of other bacteria
D) Synergistic metabolism between different microbial species
What is the major advantage of using a membrane bioreactor in wastewater treatment
compared to conventional activated sludge processes ?
A) Higher effluent quality B) Lower energy consumption
C) Smaller footprint D) Reduced sludge production
Which microbial process involves the enzymatic conversion of Polychlorinated
Biphenyls (PCBs) to more readily degradable forms ?
A) Oxidation B) Reduction
C) Hydrolysis D) Dechlorination
Chemolithotrophic acidophilic bacterium Thiobacillus ferrooxidans is used in biomining
due to its ability to oxidize
реп) 01 B) Copper C) Sulphur D) Metallic oxides
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