Chemistry Chemical formula of washing soda is Na2CO3.10H2O NaHCO3 Na2SO4.10H2O Ca(OH)2 Na2CO3.10H2O NaHCO3 Na2SO4.10H2O Ca(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Sewage Insecticides Leaded gasoline Tobacco Sewage Insecticides Leaded gasoline Tobacco ANSWER DOWNLOAD EXAMIANS APP
Chemistry The name of plastic polymer from which combs, toys, bowls etc., can be made, is Polystyrene Teflon Polyurethane Metallic polysulphides Polystyrene Teflon Polyurethane Metallic polysulphides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Carbon monoxide Water vapour Ozone Carbon dioxide Carbon monoxide Water vapour Ozone Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Physico-chemical characteristics of water in water sources undergo changes due to Evapotranspiration Effluents Auatic fungi Aquatic macrophytes Evapotranspiration Effluents Auatic fungi Aquatic macrophytes ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is 7.2 x x/6 5x 5x/36 7.2 x x/6 5x 5x/36 ANSWER DOWNLOAD EXAMIANS APP
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