What is meant by contamination?...

What is meant by contamination?

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What are the secondary pollutants?
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What is meant by biodegradable pollutants ?
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What is meant by contamination?
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Name two biodegradable pollutants.
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Name two non-degradable pollutants.
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Give two examples of natural pollution.
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Define air pollution.
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Name two air pollutants.
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Which gas is responsible for green house effect ?
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Is CO2 cause direct pollution ?
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Which gas is responsible for green house effect ?
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Name two green house gases.
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What is smog ?
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What are biodegradable and non-biodegradable detergents? Give one exam...
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What are primary and secondary valencies?
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How NO is depleting ozone layer ?
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How are'freons' creating a hole in the ozone layer ?
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How ozone layer is formed and acting as a protecting umbrella ?
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What are the chemical reactions involved in the ozone layer depletion?
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List the main points of difference between 'London smog' and 'Photoche...
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