Red hot coke+Steam`overset(100^(@)C)tounderset("Stream")underset(uarr)(X)overset(500^(@)C)underset("Catalyst(Y))to(Z)+H_(2)`
the above sequence refers to

Options

A. Lane's process
B. Bosch's process
C. Ostwald's process
D. Haber's process

Explanation

To solve the question regarding the reaction sequence involving red hot coke and steam, we will analyze the steps involved in the process and identify the compounds formed at each stage.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The first reactant is red hot coke, which is primarily composed of carbon (C).
- The second reactant is steam, which is water in gaseous form (H₂O).

2. **First Reaction**:
- When carbon reacts with steam at 100°C, the reaction can be represented as:
\[ C + H_2O \rightarrow CO + H_2 \]
- This reaction produces carbon monoxide (CO) and hydrogen gas (H₂). The mixture of CO and H₂ is commonly referred to as "water gas" or "synthesis gas."

3. **Identify Compound X**:
- From the first reaction, we can identify compound X as water gas, which consists of carbon monoxide (CO) and hydrogen (H₂).

4. **Second Reaction**:
- The water gas (CO + H₂) is then subjected to a further reaction in the presence of a catalyst (Y) at 500°C. The catalyst used in this process is typically a combination of iron(III) oxide (Fe₂O₃) and chromium(III) oxide (Cr₂O₃).
- The reaction can be represented as:
\[ CO + H_2O \xrightarrow{Catalyst\ Y} CO_2 + H_2 \]
- In this reaction, carbon monoxide reacts with steam to produce carbon dioxide (CO₂) and additional hydrogen gas (H₂).

5. **Identify Compound Z**:
- From the second reaction, we can identify compound Z as carbon dioxide (CO₂).

6. **Conclusion**:
- The overall process described in the question is known as the **BOSCH process**, which is used for the production of hydrogen gas from carbon and steam.

### Summary of Compounds:
- **X**: Water gas (CO + H₂)
- **Y**: Catalyst (Fe₂O₃ + Cr₂O₃)
- **Z**: Carbon dioxide (CO₂)

### Final Answer:
The above sequence refers to the **BOSCH process**.