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 Insecticides Leaded gasoline Sewage Tobacco Insecticides Leaded gasoline Sewage Tobacco ANSWER DOWNLOAD EXAMIANS APP
Chemistry An example of major air pollutant is Carbon monoxide Helium Carbon dioxide Oxygen Carbon monoxide Helium Carbon dioxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which type of radiations are absorbed by the upper layer of the atmosphere? Ultraviolet Infrared Visible Radio-waves Ultraviolet Infrared Visible Radio-waves ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide level in the atmosphere can be reduced by using 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 Low - sulphur fuels Catalytic converters in industry ANSWER DOWNLOAD EXAMIANS APP
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