Statement 1: In extraction of copper from chalcopyrite after roasting in supply of air at moderate temperature, the temperature of the roasting ore is increased above the fusion temperature and then silica is added in reverberatory furnace. Statement 2: In the extraction of copper from chalcopyrites during smelting, the impurity of iron oxide is removed as fusible slag (FeSiO3) in blast furnace or reverberatory furnace.

Question

Statement 1: In extraction of copper from chalcopyrite after roasting in supply of air at moderate temperature, the temperature of the roasting ore is increased above the fusion temperature and then silica is added in reverberatory furnace. Statement 2: In the extraction of copper from chalcopyrites during smelting, the impurity of iron oxide is removed as fusible slag (FeSiO3) in blast furnace or reverberatory furnace. (A) If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1. (B) If both Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1. (C) If Statement 1 is true but Statement 2 is false. (D) If Statement 1 is false but Statement 2 is true.

Tardigrade Admin · Accepted Answer

Correct answer is (d) If Statement 1 is false but Statement 2 is true.