Environmental Engineering in CE Which of the following industries discharge mercury as a pollutant? Phosphoric acid plant Chloro-alkali industry Beverage plant Tanneries Phosphoric acid plant Chloro-alkali industry Beverage plant Tanneries ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 0.2 0.002 1.2 4.8 0.2 0.002 1.2 4.8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. 35 105 95 75 35 105 95 75 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated. Increases Decreases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water Increases Decreases Remains constant May increase or decrease ; depends on the chemical characteristics of polluted water ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following processes is involved in the biochemical treatment of sewage effluents? Reduction Oxidation Fermentation Dehydration Reduction Oxidation Fermentation Dehydration ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is an adsorbant used for the removal of SO₂ from gas/air? Limestone powder or alkalised alumina Bog iron Active carbon Silica gel Limestone powder or alkalised alumina Bog iron Active carbon Silica gel ANSWER DOWNLOAD EXAMIANS APP
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