3 Flashcards
Photochemical smog is generated
Photochemical smog is generated by the combination of smoke and fog.
Photochemical smog is
*Photochemical smog is a secondary air pollutant and generally formed in traffi c congested metropolitan cities where warm conditions and intense solar radiation are presen
Catalytic Converter
The equipment named Catalytic Converter is used for conversion of NOx, CO and unburnt hydrocarbons released from vehicles, into non-harmful molecules.
Domestic air pollution.
Air pollution caused due to domestic activities is known as Domestic air pollution.
Most signifi cant pollutant of indoor air pollution is
Radon
Radon
Radon is a colourless, odourless radioactive noble gas. *Radongas is released from Radium.
Due to the presence of radon gas there is a probability o
Due to the presence of radon gas there is a probability of lung cancer and blood cancer in human beings.
Acid rain is
like sulphur dioxide and nitrogen oxides are released into the ai
Acid rain i
like sulphur dioxide and nitrogen oxides are released into the air.
When these pollutants fall on the surface with rain, it is termed acid rain.*Normally the pH value of acid rain is less than 5.6. N
It is noteworthy that SO2
is also known as Cracking gas because if it is continuously fl own on a stone, the stone gets mangled.
SO2 gas excreted from
SO2 gas excreted from Mathura Oil Refi nery is responsible for the corrosion of Taj Mahal of Agra.
the most aff ected country from Acid Rain
Norway
Acid rain also occurs in
Acid rain also occurs in Canada and other Scandinavian Countries which is extremely harmful there
Acid Rain Information Centre
*It is noteworthy that the Acid Rain Information Centre (ARIC) is situated in Manchester, England.
N2 and their oxides.
Volcanic eruption, biological decay and lightning strikes
Eutrophication
When both organic and inorganic nutrients become excess in water then this phenomenon is called Eutrophication.
algal bloom.
Eutrophication leads to algal bloom. In this process on the surface of water body gets covered by blue-green algae along with a number of plants.
Biological Oxygen Demand is
BOD: Biological Oxygen Demand is the main unit of measurement of water pollution
Biological Oxygen Demand (B.O.D.)
As a result, the level of dissolved oxygen (DO) also decreases. Therefore, the demand for O2is directly related to the amount of increased waste. This demand is called Biological Oxygen Demand (B.O.D.
called highly polluted water.
When this level goes below 4.0 mgL–1 then that water is called highly polluted water.
highest level of BOD in
The highest level of BOD in the Ganga river is found between Kanpur and Allahabad.
Arsenic
Arsenic in the state of the compound, is found at many places on the earth
Black Foot disease.
The continuous contact with Arsenic leads to in Black Foot disease.