`PbO_(2)+HNO_(3)(dil.)to`No dissolution.

Options

A. For precipitate formation formation reaction
B. For precipitate dissolution reaction
C. For precipitate exchange reaction
D. For no reaction

Answer

To solve the question regarding the reaction of lead dioxide (PbO₂) with dilute nitric acid (HNO₃), we will analyze the situation step by step.

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this case are lead dioxide (PbO₂) and dilute nitric acid (HNO₃).

2. **Understand the Nature of the Reactants**:
- PbO₂ is a solid oxide of lead.
- HNO₃ is a strong acid, but in its dilute form, it may not have the same reactivity as concentrated nitric acid.

3. **Consider the Reaction Type**:
- The question states that there is "no dissolution." This indicates that when PbO₂ is mixed with dilute HNO₃, no chemical reaction occurs that leads to the formation of soluble products.

4. **Evaluate the Options**:
- **Option 1: Precipitate formation reaction** - This is incorrect because no precipitate is formed; instead, there is no reaction.
- **Option 2: Precipitate dissolution reaction** - This is also incorrect because there is no precipitate present to dissolve.
- **Option 3: Precipitate exchange reaction** - This is incorrect as there is no precipitate to exchange.
- **Option 4: No reaction** - This is the correct option since there is no observable reaction between PbO₂ and dilute HNO₃.

5. **Conclusion**: Based on the analysis, the correct answer is that there is "no reaction" between PbO₂ and dilute HNO₃.

### Final Answer:
The correct option is **4: No reaction**.