Which of the following reduction reactions are actually employed in commercial extraction of metals? — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

Step 1: Ore concentration refers to the physical or chemical processes used to separate gangue impurities from minerals (e.g., gravity, magnetic, and froth floatation methods). Step 2: Smelting is a thermal metallurgical reduction step where roasted ore is melted with coke and flux to obtain molten crude metal. Step 3: Since smelting is a metal reduction process rather than an ore concentration method, it is the correct choice, corresponding to option (b).