Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of excess flourine in water causes Tooth decay Respiratory disease Dental cavity Fluorosis Tooth decay Respiratory disease Dental cavity Fluorosis ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Foul odour and bad taste of water is removed by treating with Bleaching powder Alum Activated carbon Copper sulphate Bleaching powder Alum Activated carbon Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 170 200 140 120 170 200 140 120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Water filtration rate in a rapid sand filter ranges from __________ kilolitres/m²/hr. 0.1 to 1 3 to 6 10 to 15 15 to 20 0.1 to 1 3 to 6 10 to 15 15 to 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Soluble silica present in boiler feed water can be removed by Coagulation Filtration Anion exchanger Preheating it Coagulation Filtration Anion exchanger Preheating it ANSWER DOWNLOAD EXAMIANS APP
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