Match the following
1. Reaction of hydrogen sulphide with chlorine `" "`(a) Reduction
2. Splitting of water into hydrogen and oxygen `" "` (b) Oxidation
3. Reaction of copper oxide with carbon `" "` (c) Electrolysis
4. Formation of hydrogen from water and coke (carbon) `" "` (d) Bosch process

Answer

To solve the matching question, we will analyze each reaction and determine the correct match from the given options.

### Step-by-Step Solution:

1. **Reaction of Hydrogen Sulphide with Chlorine:**
- When hydrogen sulfide (H₂S) reacts with chlorine (Cl₂), it produces hydrochloric acid (HCl) and elemental sulfur (S).
- In this reaction, hydrogen is removed from H₂S, which indicates that oxidation is occurring (removal of hydrogen or addition of oxygen is oxidation).
- **Match:** 1 → (b) Oxidation

2. **Splitting of Water into Hydrogen and Oxygen:**
- The splitting of water (H₂O) into hydrogen (H₂) and oxygen (O₂) is achieved through a process called electrolysis.
- Electrolysis involves using electric current to drive the decomposition of water into its constituent gases.
- **Match:** 2 → (c) Electrolysis

3. **Reaction of Copper Oxide with Carbon:**
- When copper oxide (CuO) reacts with carbon (C), it produces copper (Cu) and carbon dioxide (CO₂).
- In this reaction, oxygen is removed from copper oxide, which indicates that reduction is occurring (removal of oxygen is reduction).
- **Match:** 3 → (a) Reduction

4. **Formation of Hydrogen from Water and Coke (Carbon):**
- The reaction of water with coke (carbon) produces carbon monoxide (CO) and hydrogen (H₂).
- This process is specifically known as the Bosch process, which is used for producing hydrogen.
- **Match:** 4 → (d) Bosch process

### Final Matches:
1. Reaction of hydrogen sulphide with chlorine → (b) Oxidation
2. Splitting of water into hydrogen and oxygen → (c) Electrolysis
3. Reaction of copper oxide with carbon → (a) Reduction
4. Formation of hydrogen from water and coke → (d) Bosch process

### Summary of Matches:
- 1 → (b)
- 2 → (c)
- 3 → (a)
- 4 → (d)