When superheated steam is passed through white hot coke, it gets reduced to a mixture of X and Y. Y is a highly inflammable gas. The mixture of X and Y is named as Z.
Identify the mixture Z.

Options

A. Producer gas
B. Water gas
C. Coal gas
D. Natural gas

Explanation

To solve the question, we need to analyze the reaction that occurs when superheated steam is passed through white hot coke. Here’s the step-by-step solution:

### Step 1: Understand the Components Involved
- **Coke**: This is primarily carbon (C) and is used as a reducing agent.
- **Superheated Steam**: This is water vapor (H2O) that has been heated beyond its boiling point.

### Step 2: Identify the Reaction
When superheated steam is passed over white hot coke, a chemical reaction occurs:
\[ \text{C (s) + H}_2\text{O (g)} \rightarrow \text{CO (g) + H}_2\text{(g)} \]

### Step 3: Identify the Products
- **X**: In this reaction, X is carbon monoxide (CO).
- **Y**: Y is hydrogen gas (H2), which is known to be highly inflammable.

### Step 4: Identify the Mixture
The mixture of X and Y is:
- **Z**: This mixture is commonly known as "water gas," which consists of carbon monoxide and hydrogen gas.

### Final Answer
Thus, the mixture Z is **water gas**, which is a combination of carbon monoxide (CO) and hydrogen gas (H2).

---