Chemistry Which one of the following elements is used in the manufacture of safety matches? Graphite Phosphorus Silicon Sodium Graphite Phosphorus Silicon Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Major gaseous pollutant of the thermal power station is SO2 NH3 NO2 H2 S SO2 NH3 NO2 H2 S ANSWER DOWNLOAD EXAMIANS APP
Chemistry The working of a dry cell is based on Combination reaction Decomposition reaction Electrolysis Spontaneous oxidation-reduction reaction Combination reaction Decomposition reaction Electrolysis Spontaneous oxidation-reduction reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Food cans are coated with tin and not with zinc because Zinc is more reactive than tin Zinc is less reactive than tin Zinc has a higher melting point than tin Zinc is costlier than tin Zinc is more reactive than tin Zinc is less reactive than tin Zinc has a higher melting point than tin Zinc is costlier than tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is most acidic Al22O3 Na2O MgO CaO Al22O3 Na2O MgO CaO ANSWER DOWNLOAD EXAMIANS APP
Chemistry In the electroplating of gold, the electrolyte used is Gold nitrate Gold sulphate Gold chloride Potassium aurocyanide Gold nitrate Gold sulphate Gold chloride Potassium aurocyanide ANSWER DOWNLOAD EXAMIANS APP