Environmental Engineering in CE A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called Skimming mill Septic tank Lagoon Cesspool Skimming mill Septic tank Lagoon Cesspool ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is a secondary air pollutant? Nitrogen dioxide Dust particles Photochemical smog Sulphur dioxide Nitrogen dioxide Dust particles Photochemical smog Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of iron and manganese in water causes Temporary hardness Discoloration of bathroom fixtures None of these Reduction in its dissolved oxygen content Temporary hardness Discoloration of bathroom fixtures None of these Reduction in its dissolved oxygen content ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is absent in the emissions from a fertiliser plant ? NO₂ SO₂ & SO₃ NH₃ CO NO₂ SO₂ & SO₃ NH₃ CO ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. 100 3 70 30 100 3 70 30 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh sewage is __________ in nature. Neutral Highly acidic Acidic Alkaline Neutral Highly acidic Acidic Alkaline ANSWER DOWNLOAD EXAMIANS APP
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