Read the following and answer any four questions
During extraction of metals, electrolytic refining is used to obtain pure metals. During the process, the impure metal is made the anode and a thin strip of pure metal is made the cathode. The solution of the metal salt is used as an electrolyte. On passing the current through the electrolyte, the pure metal from the anode dissolves from the electrolyte. An equivalent of pure metal from the electrolyte is deposited on the cathode.
In electrolytic refining of copper, impure copper act as_________and pure copper as_________:

Options

A. cathode, anode
B. cathode, electrolyte
C. anode, cathode
D. electrolyte, cathode

Explanation

To answer the question regarding the electrolytic refining of copper, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Process**: Electrolytic refining is a method used to purify metals, particularly copper. In this process, two electrodes are used: the anode and the cathode.

2. **Identifying the Anode**: In electrolytic refining, the impure metal (in this case, copper) is made the anode. This means that the impure copper will be oxidized, and its metal ions will dissolve into the electrolyte solution.

3. **Identifying the Cathode**: The pure metal (pure copper) is made the cathode. During the process, metal ions from the electrolyte will be reduced and deposited onto the cathode.

4. **Final Answer**: Therefore, in the electrolytic refining of copper:
- Impure copper acts as the **anode**.
- Pure copper acts as the **cathode**.

### Final Answer:
In electrolytic refining of copper, impure copper acts as **anode** and pure copper as **cathode**.

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