Environmental Engineering in CE Smog is not formed due to the presence of __________ in the atmosphere. NOx SO₂ CO₂ Any of these NOx SO₂ CO₂ Any of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Acetaldehyde Carbon dioxide Toluene Carbon disulphide Acetaldehyde Carbon dioxide Toluene Carbon disulphide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagoons used for purification of polluted water Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre All of these Use micro-organisms/bacteria in presence of dissolved oxygen Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds Gives an excellent final effluent (with 3 to 4 lagoons arranged in series) having suspended solid < 1 mg/litre and BOD = 3.8 mg/litre All of these Use micro-organisms/bacteria in presence of dissolved oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible turbidity in potable water is __________ ppm. 1 1000 250 10 1 1000 250 10 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). 43961 25-30 43832 15-20 43961 25-30 43832 15-20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE TLV of mercury in potable (drinking) water is about __________ ppm. 0.1 1 5 0.001 0.1 1 5 0.001 ANSWER DOWNLOAD EXAMIANS APP
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