Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Disinfection Filtration Sedimentation Coagulation Disinfection Filtration Sedimentation Coagulation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum allowable concentration of CO₂ in air for safe working is __________ ppm (parts per million). 2000 50 1000 5000 2000 50 1000 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh domestic sewage is __________ in color. Grey Dark brown Red Black Grey Dark brown Red Black ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant? Arsenic Lead Aluminium Mercury Arsenic Lead Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level inside a jet air liner in normal flight is about __________ decibels. 100 145 125 80 100 145 125 80 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? Acetylene Hydrogen Carbon monoxide Ammonia Acetylene Hydrogen Carbon monoxide Ammonia ANSWER DOWNLOAD EXAMIANS APP
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