MCQ Class 10 Science Chapter 13 Our Environment Advertisement MCQ’s For All Chapters – Science Class 10th 1. The decomposers in an ecosystem:Convert inorganic material into the organic compoundConvert organic material to inorganic formsConvert inorganic material to simpler formsDo not break down the organic compoundQuestion 1 of 152. Which statement shows the interaction of an abiotic component with a biotic component in an ecosystem?A mouse fighting with another mouse for foodA grasshopper feeding on a leafAn earthworm making a burrow in the soilRainwater running down into the lakeQuestion 2 of 153. The amount of energy that flows from one trophic level to another in a food chain is15 %5%10 %20 %Question 3 of 154. The amount of energy that flows from one trophic level to another in a food chain is15 %5%10 %20 %Question 4 of 155. The manufacturing of Chlorofluorocarbons free refrigerators is mandatory throughout the world. How does this help prevent ozone depletion?This will reduce the release of CFCs that reacts with ozone moleculesThis will help convert oxygen molecules into ozoneThis will help convert the CFCs into ozone moleculesThis will reduce the production of CFCs from oxygen moleculesQuestion 5 of 156. Which of the following is responsible for the depletion of the ozone layerCO2CFCsOxygenSO2Question 6 of 157. The driving force of an ecosystem isATPCarbohydratesSolar energyBiomassQuestion 7 of 158. Kitchen wastes can be hygienically disposed of throughIncinerationDumpingCompostingRecyclingQuestion 8 of 159. Environment includesPlants, animals, microbesLand, air, waterLight, temperature, rainfallAll of theseQuestion 9 of 1510. Which of the following is a linear arrangement of organisms?Food chainCommunityTrophic levelsFood webQuestion 10 of 1511. Problem of solid waste disposal can be reduced throughPopulation controlRecyclingLesser pollutionMore timberQuestion 11 of 1512. The cleaners of nature areDecomposersProducersConsumersHerbivoresQuestion 12 of 1513. In a food chain, the third trophic level is always occupied byDecomposersCarnivoresHerbivoresProducersQuestion 13 of 1514. The harmful chemical which is accumulating in human beings through the food chain isCFCBHCDDTAbscisic acidQuestion 14 of 1515. Carnivores representReducersPhytoplanktonPrimary consumersSecondary and tertiary consumersQuestion 15 of 15 Loading...
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