Environmental Engineering in CE Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels. 120 75 140 95 120 75 140 95 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Radioactive substances present in the polluted water stream can be removed by Biological oxygen treatment None of these Coagulation and filtration Adsorption in ion exchange materials Biological oxygen treatment None of these Coagulation and filtration Adsorption in ion exchange materials ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE White smoke coming out of the chimney of a furnace indicates the use of Very high excess air Liquid fuel in the furnace Gaseous fuel in the furnace Low excess air Very high excess air Liquid fuel in the furnace Gaseous fuel in the furnace Low excess air ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace. Low amount of excess combustion air Pulverised coal as fuel Large quantity of excess combustion air Hydrocarbon fuel Low amount of excess combustion air Pulverised coal as fuel Large quantity of excess combustion air Hydrocarbon fuel ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 16 to 20 2 to 4 8 to 12 24 to 32 16 to 20 2 to 4 8 to 12 24 to 32 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Exposure to small amount of __________ results in high blood pressure & heart disease in human beings. Hydrogen sulphide Cadmium Asbestos Mercury Hydrogen sulphide Cadmium Asbestos Mercury ANSWER DOWNLOAD EXAMIANS APP
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