MCQ Science and Technology Part II Class 10 Chapter 7 Maharashtra Board Introduction to Microbiology 1. Which bacteria decompose xenobiotic chemicals in sewage?SaccharomycesPhenol oxidizing bacteriaXanthomonasAspergillusQuestion 1 of 202. What is the sludge from sewage treatment used as?FuelFertilizerPlasticPaintQuestion 2 of 203. Which bacteria are used to clear oil spills in oceans?ThiobacilliActinomycetesPseudomonas spp.LactobacillusQuestion 3 of 204. What chemical substance is used to form plastic bottles?Polyvinyl chloridePolystyrenePolyethylene Terephthalate (PET)PolypropyleneQuestion 4 of 205. Which bacteria can decompose PET in plastic bottles?XanthomonasStreptococcusIdeonella sakaiensisAcetobacterQuestion 5 of 206. Which bacteria use sulphuric acid as an energy source to control soil pollution?Acidophillium spp.GlucanobacterPseudomonasLactobacillusQuestion 6 of 207. Which bacteria prevent uranium salts from mixing with groundwater?XanthomonasSaccharomycesGeobacterAspergillusQuestion 7 of 208. Which microbe is used in organic farming as a microbial inoculant?StreptococcusAzotobacterClostridiumAlcanovoraxQuestion 8 of 209. What is a benefit of microbial inoculants in farming?Promotes pest growthPrevents soil pollution from chemical fertilizersReduces soil fertilityIncreases chemical fertilizer useQuestion 9 of 2010. What is spinosad, used as a biopesticide?A mineral compoundA by-product of fermentationA synthetic chemicalA plant extractQuestion 10 of 2011. Which harmful bacteria are reduced by probiotics in the intestine?AcidophilusBifidobacteriumClostridiumLactobacillusQuestion 11 of 2012. What is the role of bioreactors in landfill sites?Purify waterGenerate electricityProduce plasticDecompose wasteQuestion 12 of 2013. How is acetic acid bleached in vinegar production?FermentationDistillationPotassium ferrocynide treatmentPasteurizationQuestion 13 of 2014. What is the purpose of compacting garbage in municipal vans?Produces compostDecreases garbage volumeIncreases garbage volumeGenerates biogasQuestion 14 of 2015. Which bacteria remove sulphur from fuels?XanthomonasSome microbes (unspecified)SaccharomycesLactobacillusQuestion 15 of 2016. Which bacteria decompose rubber from garbage?AlcanovoraxAcidobacillusActinomycetesGlucanobacterQuestion 16 of 2017. What is a role of microbes in sewage management?Produce plasticReduce water contentDestroy pathogens like cholera and typhoidIncrease pathogensQuestion 17 of 2018. Which material is recommended for biodegradable garbage storage?Polyvinyl chloridePolystyrenePolyethylenePolylactic acidQuestion 18 of 2019. Why are mutant bacterial strains used in industrial microbiology?To increase energy consumptionTo reduce product qualityTo avoid unnecessary steps/materialsTo increase production costsQuestion 19 of 2020. Why are microbial enzymes mixed with detergents?To increase dirt retentionTo produce harmful by-productsTo reduce detergent effectivenessTo enable dirt removal at low temperaturesQuestion 20 of 20 Loading...
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