Brass is not suitable for type making because

Options

A. brass expands on solidification.
B. brass contracts on solidification.
C. brass has less tensile strength.
D. brass has less ductility.

Answer

**Step-by-Step Solution:**

1. **Understanding the Properties of Brass:**
- Brass is an alloy primarily made of copper and zinc. It is known for its malleability and resistance to corrosion.

2. **Analyzing the Options:**
- We have four options to consider regarding why brass is not suitable for type making:
a. Brass expands on solidification.
b. Brass contracts on solidification.
c. Brass has less tensile strength.
d. Brass has less ductility.

3. **Evaluating Each Option:**
- **Option a:** "Brass expands on solidification" - This is incorrect. Most metals contract when they solidify.
- **Option b:** "Brass contracts on solidification" - This is true; most metals, including brass, contract when they solidify.
- **Option c:** "Brass has less tensile strength" - This is misleading. Brass has good tensile strength, but it may not be as high as other materials used for type making.
- **Option d:** "Brass has less ductility" - This is also misleading. Brass is known for its ductility, allowing it to be drawn into wires.

4. **Conclusion:**
- The most relevant reason why brass is not suitable for type making is that it expands on solidification, which can lead to inaccuracies in the type. Therefore, the correct answer is that brass expands on solidification.

**Final Answer:**
Brass is not suitable for type making because it expands on solidification.

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