Atmospheric pollutant is –

Which of the following statement is incorrect ?

Lichens are important in the studies on atmospheric pollution because they –

Main air pollutant is

Aerosol are particles in air less than –

Noise pollution is created if noise is in excess to –

Photochemical smog is related to the pollution of

The major source of pollution up to 80% of total air pollution in metropolitan cities is due to –

Which of the following does not cause pollution ?

Which of the following is most harmful pollutant ?