Chemical Engineering :: Environmental Engineering
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Presence of __________ bacteria in water causes disease like typhoid.
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CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.
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Green house gases blanket/block the infrared radiation from earth's surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect ?
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A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
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The common pollutant generated in chlor-alkali industry and battery manufacture is
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During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
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Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace.
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Pick out the wrong statement.
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__________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant.
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A.
A slight haze at the top of chimney indicates good combustion in the furnace.
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B.
A bag filter incurs very small pressure drop and is very efficient for removal of sub-micronic dust particles from flue gases at very high temperature.
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C.
Electrostatic precipitator is the most efficient dust collection equipment for removal of sub-micronic dust particles present in flue gas.
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D.
none of these.
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