Name the following:
A base which is not alkali, and
a base which is alkali.

Explanation

To answer the question, we need to identify two types of bases: one that is an alkali and one that is not.

### Step-by-Step Solution:

1. **Define Alkali**: An alkali is a type of base that is soluble in water. When dissolved, it produces hydroxide ions (OH⁻) in solution.

2. **Identify an Alkali**: A common example of an alkali is Sodium Hydroxide (NaOH). When NaOH is dissolved in water, it dissociates into sodium ions (Na⁺) and hydroxide ions (OH⁻), making it an alkali.

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