NCERT/Class 10/Science/Our Environment

Our Environment

Class 10 · Science

150 questions50 easy50 medium50 hard

Sample Questions

Q1.According to the 10% law, if producers have 10,000 J of energy, how much energy is available to primary consumers?

  • A10,000 J
  • B1,000 J
  • C100 J
  • D10 J

Q2.Parasites are a type of:

  • AProducers
  • BConsumers
  • CDecomposers
  • DAbiotic components

Q3.Why are non-biodegradable pesticides more dangerous than biodegradable ones in a food chain?

  • AThey are more soluble in water
  • BThey accumulate progressively at each trophic level through biomagnification
  • CThey kill producers immediately
  • DThey destroy the ozone layer

Q4.Which of the following groups contain only biodegradable items?

  • AGrass, wood and plastic
  • BFruit peels, cake and lime-juice
  • CGlass, leather and flowers
  • DPlastic bags, paper and wood

Q5.What is a food chain?

  • AA chain used to lock food storage
  • BA series of organisms where each one feeds on the previous one
  • CA network of decomposers
  • DA group of producers in an ecosystem

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

10% lawCFC mechanismCFC regulationCFCsCO2DDTDNA damageLindemanMontreal ProtocolUNEPUV radiationabiotic componentsaccumulationagricultureapex predatorsaquariumaquatic ecosystemaquatic food chainartificial ecosystematmosphereautotrophsbacteriabiodegradabilitybiodegradablebiodegradable alternativesbiodegradable wastebiodiversitybiodiversity conservationbiological magnificationbiomagnificationbiomagnification factorbiomassbiomass pyramidbiotic componentscalculationcarbon cyclecarnivoreschemical accumulationchemical formulachemical reactionchlorine catalysisclimate changeconcentration gradientconsumer cultureconsumersdecomposersdecompositiondecomposition limitsdigestiondroughtdynamic equilibriume-wasteecological consequencesecological energeticsecological pyramidecosystemecosystem balanceecosystem collapseecosystem complexityecosystem principlesecosystem regulationecosystem restorationecosystem stabilityecosystem typesenergy calculationenergy captureenergy efficiencyenergy flowenergy lossenergy transferentropyenvironmental conservationenvironmental factorsenvironmental impactenvironmental managementenvironmental policyenvironmental problemsenvironmental trade-offsenvironmental tradeoffsenzyme actionenzyme specificityeutrophicationextended producer responsibilityfat accumulationfeeding relationshipsfood chainfood chain lengthfood chainsfood productionfood safetyfood securityfood webfood web disruptionfungigreenhouse gaseshazardous materialshealth effectsheat dissipationherbivoreshuman activitieshuman impacthumansinorganic substancesintegrated pest managementinterdependenceinvasive speciesinverted pyramidirreplaceable functionland uselife on Earthlifecyclelipophilic chemicalslong-term consequencesmagnification factormarine ecosystemmatter cyclingmethanemicroplasticsmonoculturemultiple exposurenatural ecosystemnon-biodegradablenon-biodegradable wastenutrient cyclingomnivoresorganic farmingorganochlorine pesticidesozoneozone depletionozone destructionozone formationozone holeozone layerozone protectionpaper vs plasticparasitespesticidesphotosynthesisphotosynthesis efficiencyphytoplanktonplasticplastic recyclingplasticspolicypond ecosystempopulation viabilityprimary consumersprimary productivityproblem-solvingproducersproductivityreduce reuse recycleseasonal variationsecond law of thermodynamicssecondary consumersself-sustainingsewage treatmentsoil biodiversitysoil fertilitysolar energystratospheresustainabilitysustainable agriculturesustainable developmentsynthetic materialstertiary consumertertiary consumersthermodynamicstop consumerstop predatorstop-down regulationtoxicologytrophic cascadetrophic levelsunidirectionalvegetarianismwastewaste classificationwaste generationwaste managementwaste segregationwater pollutionzero waste

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