MCQ Class 7 Science Chapter 13 Wastewater Story Advertisement MCQ’s For All Chapters – Science Class 7th 1. Which of the following is wastewater?Water flowing in a riverWater trickling from a damaged tapWater coming out of a showerWater coming out of a laundryQuestion 1 of 102. Untreated human excreta is a:manurewaste waterhealth hazardnone of theseQuestion 2 of 103. Excreta from the toilet seats flow through covered drains into a chemicals:vermi-processing toiletschemicalsbiogas plantnone of theseQuestion 3 of 104. The process of removing pollutants in water before it enters a water body is calledfiltering of watercleaning of waterrefiningnone of theseQuestion 4 of 105. Which of the following is a part of inorganic impurities of the sewage?Vegetable wastePesticidesPhosphatesUreaQuestion 5 of 106. Liquid waste consisting of suspended impurities is calledChlorinationContaminantSewageAerationQuestion 6 of 107. WWTP stands forWaste Water Tremendous PlantWaste Water Therapy PlantWaste Water Treatment PlantWaste Water Travel PlantQuestion 7 of 108. Cooking oil and fats should not be thrown down the drain becauseThey break the pipeThey flow through the drain freelyIt allows the particles to get filteredThey harden and block the pipeQuestion 8 of 109. Open drain system is a breeding place for which of the following:MosquitoesFilesOrganisms which cause diseasesAll of theseQuestion 9 of 1010. Which of the following is not a source of waste water?HospitalsSewersHomesIndustriesQuestion 10 of 10 Loading...
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