Which of the following material is used to make calorimeter?

Options

A. A. Glass
B. B. Ebonite
C. C. Metal
D. D. Superconductor

Answer

To determine which material is used to make a calorimeter, we need to analyze the options provided and understand the characteristics of a calorimeter.

### Step-by-Step Solution:

1. **Understanding the Purpose of a Calorimeter**:
A calorimeter is a device used to measure the amount of heat involved in a chemical reaction or physical change. It is essential that the material used for the calorimeter allows for accurate heat measurement.

2. **Analyzing the Options**:
- **Option A: Glass**: While glass can be used in some types of calorimeters, it is not the primary material for the vessel in most calorimeters.
- **Option B: Ebonite**: Ebonite is a hard rubber and is generally not used for calorimeters due to its poor thermal conductivity.
- **Option C: Metal**: Metals are good conductors of heat and electricity. Calorimeters often use metals like copper or aluminum for their vessels because they allow for quick and accurate heat transfer.
- **Option D: Superconductor**: Superconductors are materials that can conduct electricity without resistance at very low temperatures. They are not typically used in calorimeters.

3. **Conclusion**:
Based on the analysis, the best choice for the material used to make a calorimeter is **Option C: Metal**. Metals provide the necessary thermal conductivity required for effective heat measurement.

### Final Answer:
**Option C: Metal**

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