Chemistry Copper is refined by Roasting Zone refining Electrolysis Oxidation Roasting Zone refining Electrolysis Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal compound commonly found in Sindhoor or Kumkum is based on Zinc Copper Lead Tin Zinc Copper Lead Tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ferrous sulphate is used in water treatment as a/an Coagulant aid Oxidizing agent Reducing agent Adsorbent Coagulant aid Oxidizing agent Reducing agent Adsorbent ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which None of these Decreases the rate of reaction Has no action on the rate of the reaction Increases the rate of the reaction None of these Decreases the rate of reaction Has no action on the rate of the reaction Increases the rate of the reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Iron and cadmium Lead peroxide and lead Nickel and cadmium Zinc and carbon Iron and cadmium Lead peroxide and lead Nickel and cadmium Zinc and carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Dry powder fire extinguishers contain Sand Sand and sodium carbonate Sand and sodium bicarbonate Sand and potassium carbonate Sand Sand and sodium carbonate Sand and sodium bicarbonate Sand and potassium carbonate ANSWER DOWNLOAD EXAMIANS APP