Q121
Open questionPresence of dissolved impurities of __________ is responsible for the red brownish color of water.
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Environmental Engineering
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Q122
Open questionPresence of __________ hardness is responsible for the temporary hardness in water.
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Q123
Open questionRadioactive solid nuclear wastes are disposed off by
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Q124
Open questionParticulates (< 1μm size) remaining suspended in air indefinitely and transported by wind currents are called
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Q125
Open questionWhich of the following pollutants is not emitted during volcanic eruptions?
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Q126
Open questionCoal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
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Q127
Open questionNitrogen oxides (NOx) is not produced in the __________ industry.
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Q128
Open questionPresence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes
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Q129
Open questionWhich of the following is a green house gas other than CO2?
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Q130
Open questionMethyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.
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Q131
Open questionThe earth's atmosphere is an envelope of gases present upto a height of about __________ kms.
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Q132
Open questionThe maximum CO2 is emitted into the atmosphere by
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Q133
Open questionPick out the correct statement.
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Q134
Open questionIn water treatment plant, zeolite process is used to remove the __________ of water.
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Q135
Open questionIn large thermal power stations very fine particulates present in flue gas are removed by
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Q136
Open questionHigher concentration of CO2 in atmosphere
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Q137
Open questionFoul odour and bad taste of water is removed by treating with
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Q138
Open questionThe upper layer of atmosphere is called the
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Q139
Open questionHazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.
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Q140
Open questionWorld environment day is observed every year on the 5th of
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