Impure tin contains `SnO_(2)` as one of the impurities. Name the specific method employed for converting `SnO_(2)` present in impure metal to tin.

Explanation

To convert the impure tin containing SnO₂ (tin oxide) to pure tin, the specific method employed is known as the **polling method**. Here’s a step-by-step explanation of the process:

### Step-by-Step Solution:

1. **Identify the Impurity**: The first step is to recognize that the impurity in the impure tin is SnO₂ (tin oxide).

2. **Understand the Polling Method**: The polling method is a specific technique used to purify metals that contain their oxides as impurities. It is particularly effective for reducing metal oxides to their respective metals.

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