Environmental Engineering in CE TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. 100 1000 2000 5 100 1000 2000 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE When the concentration of SO₂ in air is greater than __________ ppm, it gives a pungent smell. 0.1 1 4 0.01 0.1 1 4 0.01 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 125 105 145 85 125 105 145 85 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 16 to 20 8 to 12 2 to 4 24 to 32 16 to 20 8 to 12 2 to 4 24 to 32 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagooning process is mainly a means of the Reduction of excessive flow in sewers Biological treatment of wastes None of these Sludge disposal Reduction of excessive flow in sewers Biological treatment of wastes None of these Sludge disposal ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in Petroleum refinery Municipal sewage treatment Food industry Iron & steel plant Petroleum refinery Municipal sewage treatment Food industry Iron & steel plant ANSWER DOWNLOAD EXAMIANS APP
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