Chemistry Copper is refined by Zone refining Electrolysis Oxidation Roasting Zone refining Electrolysis Oxidation Roasting ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silver nitrate solution is kept in brown bottles in laboratory because Brown bottles react with it Brown bottles do not react with it Brown bottles stops the passage of light through it It reacts with ordinary white bottles Brown bottles react with it Brown bottles do not react with it Brown bottles stops the passage of light through it It reacts with ordinary white bottles ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to remove rust stains on cloth? Petrol Kerosene Oxalic acid solution Lime Petrol Kerosene Oxalic acid solution Lime ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound used in pricklyheat powder to prevent excessive sweating is Boric acid Sulphuric acid Phosphoric acid Carbonic acid Boric acid Sulphuric acid Phosphoric acid Carbonic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Number of6.023 × 1020 atoms present in one mole of a gas at STP is 6.023 × 1020 6.023 × 1023 '6.023 × 10–20 '6.023 × 10–23 6.023 × 1020 6.023 × 1023 '6.023 × 10–20 '6.023 × 10–23 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Quartz is a crystalline form of Alumina Silica Glass Limestone Alumina Silica Glass Limestone ANSWER DOWNLOAD EXAMIANS APP
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