Chemistry The filter over which sewage is sprinkled is called as Trickling filter Contact bed Intermittent sand filter Percolating filter Trickling filter Contact bed Intermittent sand filter Percolating filter ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Leaded gasoline Tobacco Insecticides Sewage Leaded gasoline Tobacco Insecticides Sewage ANSWER DOWNLOAD EXAMIANS APP
Chemistry An example of major air pollutant is Oxygen Carbon dioxide Helium Carbon monoxide Oxygen Carbon dioxide Helium Carbon monoxide 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 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 Low - sulphur fuels ANSWER DOWNLOAD EXAMIANS APP
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