Fill in the blanks by selecting the option with the correct words.
The process of removing impurities from impure metal to obtain pure metal is known as of_____ metal. The most widely used method for refining is _____. In this method, the impure metal is taken as _____and the pure metal is taken as ______.

Options

A. Refining, electrolytic refining, anode, cathode
B. Calcination, electrolysis, cathode, anode
C. Refining, electrolytic refining, cathode, anode
D. Smelting, calcination, anode, cathode

Answer

To fill in the blanks, let's break down the information provided in the question and the video transcript step by step:

1. **Identifying the process of removing impurities from impure metal**: The process of removing impurities from impure metal to obtain pure metal is known as **refining**.

2. **Determining the most widely used method for refining**: The most widely used method for refining is **electrolysis**.

3. **Identifying the impure metal and pure metal**: In this method, the impure metal is taken as **anode** and the pure metal is taken as **cathode**.

Now, let's fill in the blanks with the correct words:

The process of removing impurities from impure metal to obtain pure metal is known as **refining** metal. The most widely used method for refining is **electrolysis**. In this method, the impure metal is taken as **anode** and the pure metal is taken as **cathode**.

### Final Answer:
The process of removing impurities from impure metal to obtain pure metal is known as **refining** metal. The most widely used method for refining is **electrolysis**. In this method, the impure metal is taken as **anode** and the pure metal is taken as **cathode**.