Consider the following metallurgical processes :
(I) Electrolysis of molten mixiure of about 40% metal chloride and 60% calcium chloride
(II) Heating the impure metal with `l_2` at around 523 K to from metal iodide and their subsequent decomposition at higher temperature to yield pure metal
(III) Heating the sulphide ore in the presence of air untill a part of it is converted to its oxide and the further heating the oxide in the absence of air with metal sulphide to produce metal
The process used for obtaining titanium sodium and copper repsectively are

Options

A. (I), (II), (III)
B. (II), (III), (I)
C. (I), (III), (II)
D. (II), (I), (III)

Answer

To solve the question regarding the metallurgical processes for obtaining sodium, titanium, and copper, we will analyze each process step by step.

### Step 1: Analyze the First Process
**Process I:** Electrolysis of molten mixture of about 40% metal chloride and 60% calcium chloride.

- **Explanation:** This process is primarily used for the electrolysis of sodium chloride (NaCl) to obtain sodium metal. The addition of calcium chloride (CaCl2) helps to lower the melting point and increase the conductivity of the molten mixture.
- **Conclusion:** This process is used to obtain **Sodium (Na)**.

### Step 2: Analyze the Second Process
**Process II:** Heating the impure metal with iodine (I2) at around 523 K to form metal iodide and their subsequent decomposition at higher temperature to yield pure metal.

- **Explanation:** In this process, titanium metal reacts with iodine at 523 K to form titanium tetraiodide (TiI4). Upon further heating, this iodide decomposes to yield pure titanium and iodine gas.
- **Conclusion:** This process is used to obtain **Titanium (Ti)**.

### Step 3: Analyze the Third Process
**Process III:** Heating the sulphide ore in the presence of air until a part of it is converted to its oxide and then further heating the oxide in the absence of air with metal sulphide to produce metal.

- **Explanation:** This process involves the partial oxidation of copper(I) sulfide (Cu2S) to copper(I) oxide (Cu2O) when heated in the presence of air. The remaining sulfide then reacts with the oxide to produce copper metal.
- **Conclusion:** This process is used to obtain **Copper (Cu)**.

### Final Conclusion
- **Process I:** Sodium (Na)
- **Process II:** Titanium (Ti)
- **Process III:** Copper (Cu)

### Summary of Answers
- The processes used for obtaining sodium, titanium, and copper respectively are:
- **Sodium:** Electrolysis of molten mixture of metal chloride and calcium chloride.
- **Titanium:** Heating impure metal with iodine followed by decomposition.
- **Copper:** Heating sulfide ore with air followed by reduction with sulfide.