Assertion: In the process of nuclear fission, the fragments emit two or three neutrons as soon as they are formed and subsequently emit particles.

Reason : As the fragments contain an excess of neutrons over protons, emission of neutrons and particles bring their neutron/proton ratio the to stable values

A. Statement-1 is True , Statement-2 is True ,Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True , Statement-2 is True ,Statement-2 is NOT a correct explanation for Statement-1
C. Statement-1 is True , Statement-2 is False
D. Statement-1 is False, Statement-2 is True

Options

A. Statement-1 is True , Statement-2 is True ,Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True , Statement-2 is True ,Statement-2 is NOT a correct explanation for Statement-1
C. Statement-1 is True , Statement-2 is False
D. Statement-1 is False, Statement-2 is True

Answer

To solve the question, we need to analyze both the assertion and the reason provided and determine their truth values and the relationship between them.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that in the process of nuclear fission, the fragments emit two or three neutrons as soon as they are formed and subsequently emit particles.
- This is true because during nuclear fission, heavy nuclei (like Uranium-235) split into smaller nuclei (fission fragments) and release neutrons. For example, in the fission of Uranium-235, it typically releases 2-3 neutrons.

2. **Understanding the Reason**:
- The reason states that the fragments contain an excess of neutrons over protons, and the emission of neutrons and particles helps to bring their neutron/proton ratio to stable values.
- This is also true. After fission, the resulting fragments often have more neutrons than protons, making them unstable. The emission of neutrons helps to stabilize the neutron/proton ratio.

3. **Analyzing the Relationship**:
- The reason explains why the assertion is true. The excess neutrons lead to instability, and their emission is a mechanism to achieve stability.
- Therefore, Statement 2 is a correct explanation for Statement 1.

4. **Conclusion**:
- Since both statements are true and Statement 2 correctly explains Statement 1, the correct answer is:
**A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1.**