Chemical Engineering :: Environmental Engineering
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Beyond what concentration of H2S in air, acute danger to human life exists ?
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Reingleman chart is used for the evaluation of __________ pollution.
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There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km.
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Brown spots in fabrics will be caused by washing with water containing large amount of .
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Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre.
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Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
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Deaeration of high pressure boiler feed water is done to reduce
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Exposure to SO2 containing chimney gases results in the
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The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.
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