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