Environmental Engineering in CE Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes Shortness of breath All of these Tuberculosis Asphyxiation (suffocation) Shortness of breath All of these Tuberculosis Asphyxiation (suffocation) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Polluted water having low BOD are most economically treated in Sludge digester Sedimentation tanks Clarifier Oxidation ponds Sludge digester Sedimentation tanks Clarifier Oxidation ponds ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. 10000 1000 500 5 10000 1000 500 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Hydrogen fluoride & nitrogen oxides Carbon monoxide Smog & ozone Sulphur dioxide & spray of weed killers Hydrogen fluoride & nitrogen oxides Carbon monoxide Smog & ozone Sulphur dioxide & spray of weed killers ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water. Color (Hazen) All of these Total solids Turbidity Color (Hazen) All of these Total solids Turbidity ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE __________ content of the phosphate rock is the pollutant of primary interest in a phos-phatic fertiliser plant. Phosphorous Sulphur Fluorine Calcium Phosphorous Sulphur Fluorine Calcium ANSWER DOWNLOAD EXAMIANS APP
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