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Angus Smith discovered in the mid of seventeenth century:

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Mean residence time of methane in atmosphere in years is:

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Paddy fields produce a significant amount of gas:

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Aerosols cause severe infections in old people of:

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Oxides of sulphur react in atmosphere by various reactions to form:

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Coal contains percentage of sulphur:

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The percentage of $SO_{2}$ produced by volcano is:

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The residence time of NO and $NO_{2}$ in atmosphere are representative in days:

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Which are gases taken as oxides of nitrogen?

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Headache, fatigue, unconsciousness and eventually death is caused by the excessive supply of gas:

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Poisoning of CO can be reversed by giving oxygen at pressure:

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Transportation causes to produce of $CO_{2}$ in atmosphere:

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Major source of generation of CO is:

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Natural sources(s) of emission of carbon monoxide:

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Which is property of CO?

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Carbon Monoxide is:

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Secondary pollutants are:

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Primary pollutants are:

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Which gas produces air pollution?

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The waste products given out from chimneys, automobiles produce pollution:

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Pollution due to adverse affect of substances on human health, quality of life, and natural functioning of ecosystem is called:

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Smaller unit of biosphere is:

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Elements in lithosphere exist generally as:

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Eleven elements made part of earth mass:

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Lithosphere extends upto kilometer of earth crust in depth:

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