Environmental Engineering in CE Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels. 120 20 90 60 120 20 90 60 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagooning process is mainly a means of the Biological treatment of wastes Sludge disposal None of these Reduction of excessive flow in sewers Biological treatment of wastes Sludge disposal None of these Reduction of excessive flow in sewers ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fresh domestic sewage is __________ in color. Red Grey Dark brown Black Red Grey Dark brown Black ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which is the most widely used coagulant for the treatment of turbid water? Sodium aluminate Ferric chloride Lime Alum (aluminium sulphate) Sodium aluminate Ferric chloride Lime Alum (aluminium sulphate) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) of CO in air is __________ ppm. 5 50 2000 5000 5 50 2000 5000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is not a source of ozone emission in the atmosphere? Xerox machines Refrigerators Dermatological photo-therapy equipments High voltage electrical equipments Xerox machines Refrigerators Dermatological photo-therapy equipments High voltage electrical equipments ANSWER DOWNLOAD EXAMIANS APP
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