Which of the following metal is leached by Cyanide process

Options

A. Ore of AI:
B. Ore of Ou
C. Ore of Ag
D. Ore of Zn

Answer

To determine which metal is leached by the cyanide process, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Cyanide Process**: The cyanide process, also known as the MacArthur-Forrest process, is a method used to extract precious metals from their ores. It primarily involves the use of cyanide solutions to leach metals.

2. **Identify the Metals in the Options**: The options provided are:
- Option 1: Ore of Al (Aluminum)
- Option 2: Ore of Au (Gold)
- Option 3: Ore of Ag (Silver)
- Option 4: Ore of Zn (Zinc)

3. **Know the Metals Typically Leached by Cyanide**: The cyanide process is most commonly associated with the extraction of gold (Au) and silver (Ag).

4. **Analyze Each Option**:
- **Ore of Al (Aluminum)**: Aluminum is not leached using cyanide.
- **Ore of Au (Gold)**: Gold can be leached by cyanide, but the question specifically asks for the metal that is leached.
- **Ore of Ag (Silver)**: Silver is also known to be leached by the cyanide process.
- **Ore of Zn (Zinc)**: Zinc is not typically leached using cyanide.

5. **Select the Correct Answer**: Since the question asks specifically for the metal that is leached by the cyanide process, the correct answer is:
- **Option 3: Ore of Ag (Silver)**.

### Final Answer:
The metal that is leached by the cyanide process is **Silver (Ag)**.

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