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Pollution & waste

Asked in 10 of the last 11 Prelims papers. A must-do.

Showing Air & water pollution · whole topic

Start practising · 15 questions
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How it's askedPollutants, their sources and effects, and waste rules.

ReadNCERT Class 12 Biology (older edition) ch. 16

Air & water pollution15 questionsWaste, plastics & chemicals14 questions
Air & water pollution: all 15 questions
2025“Activated carbon is a good and an attractive tool to remove pollutants from effluent…” and 2 more statements2024"Membrane Bioreactors" are often discussed in the context of2024According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur…2022In the context of WHO Air Quality Guidelines, consider the following statements2022Excess of which of the above in the environment is/are cause(s) of acid rain ? (Carbon monoxide, Nitrogen oxide…2021Why is there a concern about copper smelting plants?2021With reference to furnace oil: “It is a product of oil refineries.” and 2 more statements2021Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from…2020Which of the following are the reasons/factors for exposure to benzene pollution ?2020“Coal ash contains arsenic, lead and mercury.” and 2 more statements
Show all 152019Which of the above are released into atmosphere due to the burning of crop/biomass residue? (Carbon monoxide, Methane…2019“Agricultural soils release nitrogen oxides into environment.” and 2 more statements2018Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds ?2017Biological Oxygen Demand (BOD) is a standard criterion for2016In the cities of our country, which among the following atmospheric gases are normally considered in calculating the…