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 |
 95%
From NCERT
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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 |
 94%
From NCERT
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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

Subtopic:  Introduction to Pollution & Types |
 84%
From NCERT
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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 |
 63%
From NCERT
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CNG is better than petrol and diesel

(1) It burns more efficiently

(2) Is left unburnt in very little amount

(3) Cheaper

(4) All of these

Subtopic:  Air Pollution |
 96%
From NCERT
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Noise pollution can be controlled by

(1) Use of sound absorbent material

(2) Delimitation of horn free zones around hospitals and schools

(3) Permissible sound levels of crackers and timing of loud speakers

(4) All of these

Subtopic:  Air Pollution |
 97%
From NCERT
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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 |
 96%
From NCERT
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Catalytic converter does

(1) Unburnt Hydrocarbons are converted into carbon dioxide and water

(2) CO is converted into Carbon dioxide

(3) Nitric oxide is converted into Nitrogen gas

(4) All of these

Subtopic:  Air Pollution |
 93%
From NCERT
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The most effective device to remove particulate matter from polluted air is:
1. electrostatic precipitator
2. cyclonic separator
3. trajectory separator
4. scrubber

 

Subtopic:  Air Pollution |
 91%
From NCERT
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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 |
 90%
From NCERT
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