Chemistry Chemical formula of washing soda is Na2CO3.10H2O Ca(OH)2 Na2SO4.10H2O NaHCO3 Na2CO3.10H2O Ca(OH)2 Na2SO4.10H2O NaHCO3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Pollutant from motor car exhaust that causes mental disease is NO2 Hg Lead SO2 NO2 Hg Lead SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Burning pyrites ore gives out Nitrogen dioxide gas Nitric oxide gas Sulphur dioxide gas Carbon dioxide gas Nitrogen dioxide gas Nitric oxide gas Sulphur dioxide gas Carbon dioxide gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of removing calcium and magnesium from hard water is known as Water softening Sedimentation Filtration Flocculation Water softening Sedimentation Filtration Flocculation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by the pollution of environment by Nitrous oxide and Sulphur dioxide Carbon monoxide and Carbon dioxide Carbon dioxide and Nitrogen Ozone and Carbon dioxide Nitrous oxide and Sulphur dioxide Carbon monoxide and Carbon dioxide Carbon dioxide and Nitrogen Ozone and Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the simplest form of alkane Methane Propane Decane Butane Methane Propane Decane Butane ANSWER DOWNLOAD EXAMIANS APP
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