Environmental Engineering in CE Direct reaction of unsaturated hydrocarbons with either NO or NO₂ produces an eye irritating pollutant compound known as Benzopyrene Poly acrylonitrile Photochemical smog Peroxy acetyl nitrate (PAN) or methyl nitrile Benzopyrene Poly acrylonitrile Photochemical smog Peroxy acetyl nitrate (PAN) or methyl nitrile ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Brown spots in fabrics will be caused by washing with water containing large amount of . Iodine Bromine Zinc Iron Iodine Bromine Zinc Iron ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by Both A & B Neither A nor B Aerobic oxidation Using the activities of bacteria and other micro organisms Both A & B Neither A nor B Aerobic oxidation Using the activities of bacteria and other micro organisms ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 100-200 100-1000 10-100 100-200 100-1000 10-100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Photochemical smog is formed from automobile exhaust Appears only on sunny days All of these By reaction of hydrocarbon & nitric oxide in presence of sunlight Is harmful for crops and trees also besides causing eye irritation & asthma Appears only on sunny days All of these By reaction of hydrocarbon & nitric oxide in presence of sunlight Is harmful for crops and trees also besides causing eye irritation & asthma ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE 'Safe limit' called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the Burning of domestic fuel Automobiles exhaust Photochemical reaction in polluted atmosphere Industrial chimney exhaust Burning of domestic fuel Automobiles exhaust Photochemical reaction in polluted atmosphere Industrial chimney exhaust ANSWER DOWNLOAD EXAMIANS APP
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