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This MCQ is based on the Microbes in Human Welfare(Microbes are diverse–protozoa, bacteria, fungi, and microscopic animal and plant viruses, viroids, and also prions that are proteinaceous infectious agents).
Nitrogen fixation in root nodules of Alnus is brought about by
Bacillus thuringiensis (Bt) strains have been used for designing novel:
Streptococcus is used in the preparation of:
Nif gene occurs in:
Azoila has symbiotic relationship with:
Term antibiotic was first used by :
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:
BOD of waste water is estimated by measuring the amount of:
Total organic matter
Biodegradable organic matter
Oxygen evolution
Oxygen consumption.
Methanogenic bacteria are not found in:
Rumen of cattle
Gobar gas plant
Bottom of water logged paddy fields
Activated sludge.
The primary treatment of waste water involves the removal of [NCERT Exemplar]
Dissolved impurities
Stable particles
Toxic substances
Harmful bacteria.
Propionibacterium produces large holes in swiss cheese due to the
Process of oxidation of the dough
Formation of large amount of CO2
Consumption of carbohydrates
All of these
Lactic acid is formed by the process of
Fermentation
Glycolysis
Citric acid cycle
P-oxidation
Bacillus thuringiensis is used to control
Fungal pathogens
Nematodes
Bacterial pathogens
Insect pests.
Waste water treatment generates a large quantity of sludge, which can be treated by:
Digesters
Activated sludge
Chemicals
Oxidation pond.
