The process of combining metals present in their native ores with mercury to form an alloy is called

Options

A. alloying
B. galvanisation
C. amalgamation
D. crystallisation

Answer

To solve the question "The process of combining metals present in their native ores with mercury to form an alloy is called", we can follow these steps:

### Step 1: Understand the terms
- We need to identify what the question is asking. The key components here are "combining metals", "native ores", "mercury", and "alloy".

### Step 2: Identify the process
- The process of combining metals with mercury to form an alloy is a specific metallurgical technique.

### Step 3: Recall the terminology
- The term for an alloy formed by combining mercury with metals is known as an "amalgam". The process of creating this amalgam is referred to as "amalgamation".

### Step 4: Evaluate the options
- The options provided are:
A) Alloying
B) Galvanization
C) Amalgamation
D) Crystallization

### Step 5: Analyze each option
- **A) Alloying**: This refers to the general process of mixing metals to form an alloy, but it does not specifically involve mercury.
- **B) Galvanization**: This is a process used to protect iron from rusting, not related to mercury.
- **C) Amalgamation**: This is the correct term for the process of combining metals with mercury to form an amalgam.
- **D) Crystallization**: This is a process of forming solid crystals from a solution, unrelated to the question.

### Step 6: Conclusion
- Based on the analysis, the correct answer is **C) Amalgamation**.

### Final Answer
The process of combining metals present in their native ores with mercury to form an alloy is called **amalgamation**.

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