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Air & water pollution

Environment9 of 11 papers15 questions

What UPSC asks

  1. Source to pollutantCrop burning, coal plants, copper smelters, furnace oil, vehicle brakes
  2. Benzene and household sourcesVarnish and tobacco as sources of benzene
  3. Gases in AQI and acid rainWhich gases count in India's AQI or cause acid rain
  4. Clean-up technologiesWhat membrane bioreactors and activated carbon are used for

Asked again and again

Source to pollutant201920202021 Q172021 Q25What a fuel, industry or activity releases
Sulphur dioxide and its sources20202021 Q172021 Q182024Coal plants, smelters, furnace oil
Which gases count20162022 Q442022 Q100AQI, acid rain, WHO guidelines
Measuring and treating polluted water201720242025BOD, membrane bioreactors, activated carbon

How to study it

  1. List each source with the gases and particles it gives off.
  2. For each pollutant, note its effect and whether it is in India's AQI.

Hardly ever askedPollution laws and boards (Water Act, Air Act, CPCB)

Written by AI from this area's own questions; not yet reviewed by a person. Counts come straight from the questions.