Select the correct option based on the given diagram.

  • A
    Scrubber - cleans impure water
  • B
    Scrubber - cleans impure air
  • C
    Electrostatic Precipitator - cleans impure water
  • D
    Electrostatic Precipitator - cleans impure air

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In big cities,air pollution is primarily caused by:

The Air (Prevention and Control of Pollution) Act came into force in:

Carbon monoxide is a major pollutant of

Scrubber is used to remove gases like

According to an estimate in Delhi,the level of $........$ came down significantly between $1997$ and $2002$.

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