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The process of removing impurity from a ...

The process of removing impurity from a crude metal is called

A

concentration

B

calcination

C

refining

D

roasting

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### Step-by-Step Text Solution: 1. **Identify the Process**: The question asks for the name of the process that involves the removal of impurities from a crude metal. 2. **Define the Term**: The process of removing impurities from a crude metal is known as "refining." This term encompasses various methods used to purify metals. 3. **List the Methods of Refining**: Refining can be achieved through several methods, which can be categorized into three main types: - **Physical Methods**: These include processes that rely on physical changes to separate impurities from the metal. - Examples: - Liquation - Distillation - Zone refining - **Chemical Methods**: These involve chemical reactions to purify the metal. - Examples: - Poling - Cupellation - Mesomerization - **Vapor Phase Refining**: This method involves refining the metal in its vapor phase. - Examples: - Von Erkel method - Mons process 4. **Conclusion**: Therefore, the process of removing impurities from a crude metal is called "refining."
### Step-by-Step Text Solution: 1. **Identify the Process**: The question asks for the name of the process that involves the removal of impurities from a crude metal. 2. **Define the Term**: The process of removing impurities from a crude metal is known as "refining." This term encompasses various methods used to purify metals. 3. **List the Methods of Refining**: Refining can be achieved through several methods, which can be categorized into three main types: - **Physical Methods**: These include processes that rely on physical changes to separate impurities from the metal. ...
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