Stainless steel is very useful material for our life. In stainless steel,iron is mixed with

Options

A. Ni and Cr
B. Cu and Cr
C. Ni and Cu
D. Cu and Au

Explanation

**Step-by-Step Solution:**

1. **Understanding Stainless Steel**: Stainless steel is an alloy, which means it is made by combining different metals. It is known for its corrosion resistance and durability.

2. **Identifying the Main Component**: The primary metal in stainless steel is iron. It constitutes about 74% of the alloy.

3. **Recognizing Additional Elements**: In addition to iron, stainless steel contains other elements that enhance its properties. The two main elements added to iron in stainless steel are chromium and nickel.

4. **Quantifying the Additional Elements**:
- **Chromium**: Approximately 18% of stainless steel is made up of chromium. This element is crucial for providing corrosion resistance.
- **Nickel**: About 8% of stainless steel consists of nickel. Nickel improves the toughness and ductility of the steel.

5. **Conclusion**: Therefore, the correct answer to the question is that in stainless steel, iron is mixed with chromium and nickel.

**Final Answer**: Iron is mixed with chromium and nickel to form stainless steel.

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