Chemistry Iron and manganese present as pollutants in water cannot be removed by________ Chlorination Oxidation followed by settling and filtration Ion exchange process Lime soda process or manganese zeolite process Chlorination Oxidation followed by settling and filtration Ion exchange process Lime soda process or manganese zeolite process ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is usually a mixture of : Lime stone and silicon dioxide Calcium silicate and calcium aluminate Calcium aluminate and calcium ferrate Calcium silicate and calcium ferrate Lime stone and silicon dioxide Calcium silicate and calcium aluminate Calcium aluminate and calcium ferrate Calcium silicate and calcium ferrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a natural source of hydrocarbon? Mica Natural Gas Coal Petroleum Mica Natural Gas Coal Petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical formula of the laughing gas is NO NO2 N2O3 N2O NO NO2 N2O3 N2O ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Excimer laser Dye laser Semiconductor laser Gas laser Excimer laser Dye laser Semiconductor laser Gas laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Vinegar' is a commercial name of Hydrochloric acid Oxalic acid Acetic acid Citric acid Hydrochloric acid Oxalic acid Acetic acid Citric acid ANSWER DOWNLOAD EXAMIANS APP
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