Four samples of water A. B, C and D have...

Four samples of water A. B, C and D have the D.O. levels of 4 ppm. 3.8 ppm, 2.1 ppm and 4.9 ppm respectively 1he most polluted sample of water is

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AAKASH SERIES-ENVIRONMENTAL CHEMISTRY-LEVEL - I (EXERCISE -I) (Definition of terms , Introduction , Environmental segments - Air pollution , Water pollution)

Which of the following is most toxic ?
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Composition of PAN is
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A substance which is not present in nature but added lo atmoshphere du...
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Identification of a pollutant as organic, inorganic (or) organometalli...
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The medium which reacts wi lh pollutant is called
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The sink for dead plants and animals is
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Which of the following can act as sink for CO(2)and SO(2)
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Water is said to be polluted if the D.O value of water is less than
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The amount of oxygen required for healthy growth of plants and animals...
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A good quality of water will have
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The amount of oxygen required to oxidise organic substance present in ...
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Chemical oxygen demand is determined by using
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COD is a measure of
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