Chemistry The filter over which sewage is sprinkled is called as Percolating filter Contact bed Trickling filter Intermittent sand filter Percolating filter Contact bed Trickling filter Intermittent sand filter ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Leaded gasoline Tobacco Sewage Insecticides Leaded gasoline Tobacco Sewage Insecticides ANSWER DOWNLOAD EXAMIANS APP
Chemistry An example of major air pollutant is Carbon dioxide Carbon monoxide Oxygen Helium Carbon dioxide Carbon monoxide Oxygen Helium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Visible Radio-waves Ultraviolet Infrared Visible Radio-waves Ultraviolet Infrared ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide level in the atmosphere can be reduced by using Low - sulphur fuels Catalytic converters in industry More efficient car engines Static electricity to attract it in factory chimneys Low - sulphur fuels Catalytic converters in industry More efficient car engines Static electricity to attract it in factory chimneys ANSWER DOWNLOAD EXAMIANS APP