Which can be used for carrying out nuclear reaction?

Options

A. Uranium – 238
B. Neptunium – 239
C. Thorium – 232
D. Plutonium – 239

Answer

To determine which materials can be used for carrying out nuclear reactions, we need to understand the types of nuclear reactions and the elements involved.

### Step-by-Step Solution:

1. **Understand Nuclear Reactions**:
- There are two main types of nuclear reactions: fusion and fission.
- **Fusion**: This is the process where small nuclei combine to form a larger nucleus. An example is hydrogen nuclei fusing to form helium.
- **Fission**: This is the process where a large nucleus splits into smaller nuclei. A common example is uranium-235 undergoing fission when it absorbs a neutron.

2. **Identify Elements Used in Fission**:
- Fission reactions typically involve heavy elements. The most commonly used elements for fission are uranium-235 and plutonium-239.
- When uranium-235 absorbs a neutron, it becomes uranium-236 and then splits into smaller elements, releasing energy.

3. **Conclusion on Suitable Materials**:
- Based on the types of nuclear reactions, uranium-235 and plutonium-239 can be used for carrying out nuclear reactions, particularly fission.
- Therefore, if the question provides options, the correct answer would be the one that includes uranium-235 or plutonium-239.

4. **Final Answer**:
- The materials that can be used for carrying out nuclear reactions are uranium-235 and plutonium-239.