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