Environmental Engineering in CE Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm. 5 2000 1000 500 5 2000 1000 500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Soluble silica present in boiler feed water can be removed by Filtration Preheating it Anion exchanger Coagulation Filtration Preheating it Anion exchanger Coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a natural source of air pollution? Photochemical oxidation of organic matter Volcanic eruptions and lightening discharges None of these Biological decay of vegetable matter Photochemical oxidation of organic matter Volcanic eruptions and lightening discharges None of these Biological decay of vegetable matter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is an adsorbant used for the removal of SO₂ from gas/air? Bog iron Limestone powder or alkalised alumina Silica gel Active carbon Bog iron Limestone powder or alkalised alumina Silica gel Active carbon ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A man exposed to excessive noise level in the working environment may suffer from All of these Hearing loss Nervousness & fatigue Rupture of ear drum All of these Hearing loss Nervousness & fatigue Rupture of ear drum ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is the most lethal water pollutant? Suspended solids Chlorine Alkalis Phenol and cynide Suspended solids Chlorine Alkalis Phenol and cynide ANSWER DOWNLOAD EXAMIANS APP
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