Spraying of pesticide is an example of

The $BOD$ limit prescribed by the Central Pollution Control Board $(CPCB)$ for the discharge of industrial and municipal wastewater into natural surface water bodies is .....

Provide the full forms of the following abbreviations:
$(i)$ $GAIL$
$(ii)$ $BOD$

$BOD$ of polluted water is estimated by measuring the amount of . . . . . . .

Particulate pollutants from smoke chimneys can be removed by which of the following?

What is Agent Orange?