In a redox reaction, what happens to (a) an oxidising agent, (b) a reducing agent

Explanation

### Step-by-Step Solution:

**Step 1: Understanding Redox Reactions**
- A redox reaction involves the transfer of electrons between two species. It consists of two half-reactions: oxidation and reduction.

**Step 2: Define Oxidizing Agent**
- An oxidizing agent is a substance that causes the oxidation of another substance. It gains electrons in the process and is itself reduced.

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