Question

Match List - I with List - II.

• A. Electrolytic reduction & (I) Iron
• B. Bessemerization & (II) Zinc
• C. Smelting & (III) Aluminium
• D. Reduction from oxide & (IV) Copper
  \hline \end{tabular} \end{center} Choose the correct answer from the options given below:

Hint:

Electrolytic reduction, Bessemerization, smelting, and reduction from oxide are all common industrial processes used to extract metals from their ores. The key difference lies in the type of metal being extracted and the specific method employed.

Answer 1

The Correct Option is C

Let's go through each option and match them with the corresponding items in List II.
- (A) Electrolytic reduction: This process involves the reduction of metal ions to metal using electricity. This is commonly used in the extraction of aluminium (III) from its oxide (Al$_2$O$_3$) using the Hall-Héroult process. \[ \text{2Al}_2\text{O}_3 \xrightarrow{\text{electrolysis}} 4\text{Al} + 3\text{O}_2 \] So, Electrolytic reduction is related to Aluminium (III).
- (B) Bessemerization: This process is used for converting pig iron to steel by blowing oxygen through it, and it is closely related to the production of Iron (I). \[ \text{Fe}_2\text{O}_3 + 3\text{C} \xrightarrow{\text{Bessemer process}} 2\text{Fe} + 3\text{CO} \]
Therefore, Bessemerization is related to Iron (I).
- (C) Smelting: Smelting is a process of extracting metals from ores using heat. It is used to obtain metals like Zinc (II) from their ores (e.g., zinc oxide). \[ \text{ZnO} + \text{C} \xrightarrow{\text{heat}} \text{Zn} + \text{CO} \] So, Smelting is associated with Zinc (II).
- (D) Reduction from oxide: This process is used for extracting metals from their oxides using a reducing agent (usually carbon). Copper (IV) is commonly extracted from its oxide using carbon. \[ \text{CuO} + \text{C} \xrightarrow{\text{heat}} \text{Cu} + \text{CO} \] Hence, Reduction from oxide is related to Copper (IV).
Thus, the correct answer is (A)-(III), (B)-(I), (C)-(II), (D)-(IV).