Environmental Engineering in CE Fresh domestic sewage is __________ in color. Red Grey Dark brown Black Red Grey Dark brown Black 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? Sulphur dioxide & spray of weed killers Smog & ozone Hydrogen fluoride & nitrogen oxides Carbon monoxide Sulphur dioxide & spray of weed killers Smog & ozone Hydrogen fluoride & nitrogen oxides Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Corrosion in boilers can be prevented by All of these Enhancing pH of feed water by adding alkali Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion Deaeration of feed water All of these Enhancing pH of feed water by adding alkali Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen and prevents corrosion Deaeration of feed water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Salt content in sea water is about __________ percent. 1 3.5 10 0.5 1 3.5 10 0.5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Biological oxidation Chlorination Settling out using chemical reagents Skimming off Biological oxidation Chlorination Settling out using chemical reagents Skimming off ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sulphur dioxide present in the industrial chimney exhaust gases causes Reduction in plant's productivity owing to acid rain Respiratory & lung disease Corrosion of building materials All of these Reduction in plant's productivity owing to acid rain Respiratory & lung disease Corrosion of building materials All of these ANSWER DOWNLOAD EXAMIANS APP
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