Environmental Engineering in CE Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. Hydrocarbons Nitrogen dioxide Hydrogen sulphides Hydrogen flouride Hydrocarbons Nitrogen dioxide Hydrogen sulphides Hydrogen flouride ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 170 140 200 120 170 140 200 120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Salt content in sea water is about __________ percent. 0.5 1 10 3.5 0.5 1 10 3.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of high concentration of ozone and smog in atmospheric air causes the Cracking of rubber products Fading of dye on textiles Damage of electrical insulator on high tension power line Embrittlement & decrease of folding resistance of paper Cracking of rubber products Fading of dye on textiles Damage of electrical insulator on high tension power line Embrittlement & decrease of folding resistance of paper ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of All of these Ultraviolet light for irradiation of water Ozone and iodine Chlorine or its compounds All of these Ultraviolet light for irradiation of water Ozone and iodine Chlorine or its compounds ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of potable water should be between 4 to 5 1 to 1.5 6.5 to 8 13 to 14 4 to 5 1 to 1.5 6.5 to 8 13 to 14 ANSWER DOWNLOAD EXAMIANS APP
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