Agents that bring undesirable change in biological, physical and chemical environment is called

(1) Pollutant

(2) Bioparcy

(3) Bioinformatics

(4) Biomagnification

Subtopic:  Introduction to Pollution & Types |
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The act to control environmental pollution is passed by Government of India is

(1) Environment Pollution Act-1981

(2) Environment Pollution Act-1986

(3) Environment Protection Act-1986

(4) Environment Protection Act-1981

Subtopic:  Introduction to Pollution & Types |
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Environment Protection Act protects and improves the quality of

(1) Air

(2) Water

(3) Soil

(4) All of these

Subtopic:  Introduction to Pollution & Types |
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Harmful effects of Air pollutants depend upon

(1) Organism exposed

(2) Duration of exposure

(3) Concentration of pollutants

(4) All of these

Subtopic:  Air Pollution |
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Smokestacks of thermal power plants, smelters and other industries release

(1) Particulate air pollutant

(2) Gaseous air pollutant

(3) Harmful gases

(4) All of these

Subtopic:  Air Pollution |
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The particulate matter in exhaust from industries can be removed by

(1) Electrostatic Precipitator

(2) Scrubber

(3) Both (1) and (2)

(4) Cannot be removed

Subtopic:  Air Pollution |
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Which of the following is not true about electrostatic precipator?

(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

Subtopic:  Air Pollution |
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Scrubber

(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

Subtopic:  Air Pollution |
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In scrubber, exhaust is passed through

(1) A spray of water/lime

(2) A spray of electrons

(3) A spray of other harmless gases

(4) All of these

Subtopic:  Air Pollution |
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CPCB stands for

(1) Control Pollution Central Board

(2) Central Population Control Board

(3) Central Pollution Control Board

(4) Control Population Central Board

Subtopic:  Air Pollution |
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