Name the process by which impure ore of aluminium gets purified by using concentrated solution of an alkali.

Explanation

To solve the question, we need to identify the process used to purify the impure ore of aluminum, which is bauxite, using a concentrated solution of an alkali.

### Step-by-Step Solution:

1. **Identify the Impure Ore**: The impure ore of aluminum is known as bauxite.
- **Hint**: Remember that bauxite is the primary ore from which aluminum is extracted.

2. **Understand the Purification Process**: The process involves using a concentrated solution of an alkali to purify the ore.
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