Pollution:
1. Any undesirable change in physical characteristics of air, land water and soil
2. Any undesirable change in biological characteristics of air, land water and soil
3. Any undesirable change in physical, chemical and biological characteristics of air, land water and soil
4. Any undesirable change in physical and chemical characteristics of air, land water and soil

(1) Pollutant

(2) Bioparcy

(3) Bioinformatics

(4) Biomagnification

(1) Environment Pollution Act-1981

(2) Environment Pollution Act-1986

(3) Environment Protection Act-1986

(4) Environment Protection Act-1981

(1) Air

(2) Water

(3) Soil

(4) All of these

(1) Organism exposed

(2) Duration of exposure

(3) Concentration of pollutants

(4) All of these

(1) Particulate air pollutant

(2) Gaseous air pollutant

(3) Harmful gases

(4) All of these

(1) Electrostatic Precipitator

(2) Scrubber

(3) Both (1) and (2)

(4) Cannot be removed

(1) It can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant

(2) Electrode wires maintained at thousand volts, which produce a corona that release electrons

(3) The protons are attached to dust particle give them a net positive charge

(4) The collecting plates attract the dust particles

(1) Can remove only sulphur dioxide

(2) Can remove gases like sulphur dioxide

(3) Can remove harmless gases

(4) Mix harmless gases with gaseous pollutants

(1) A spray of water/lime

(2) A spray of electrons

(3) A spray of other harmless gases

(4) All of these