_______,an alloy of tin helps in joining electrical wries .

Options

A. Magnalium
B. Solder
C. Brass
D. Bronze

Answer

To solve the question, "_______, an alloy of tin helps in joining electrical wires," we need to identify the correct alloy of tin that is commonly used for this purpose.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for an alloy of tin that is used in joining electrical wires.

2. **Identify the Options**: The options provided are:
- A) Magnilium
- B) Solder
- C) Brass
- D) Bronze

3. **Analyze Each Option**:
- **Magnilium**: This is an alloy of magnesium and aluminum, not tin. Therefore, it is not the correct answer.
- **Solder**: This is an alloy of tin and lead, typically composed of about 67% tin and 33% lead. Solder is widely used in electrical applications for joining wires.
- **Brass**: This is an alloy of copper and zinc, which does not contain tin. Hence, it is not the correct answer.
- **Bronze**: This is an alloy of copper and tin, but it is not primarily used for joining electrical wires.

4. **Conclusion**: Among the options, solder is the only alloy that contains tin and is specifically used for joining electrical wires.

5. **Final Answer**: The correct answer is **B) Solder**.