The extent of pollution in the environment can be known by the quantity in which they are present. This is indicated in terms of 'ppm'. What does it stand for?

Parts per million

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Pollutant presence measure

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Purity per microgram

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Particles per mole

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Solution

The correct option is B Parts per million
Ppm stands for parts per million- it is the mass of chemical contaminant per unit volume of water.

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