Assertion:When a copper wire is dipped in silver nitrate solution, there is no change in the colour of the solution.
Reason : Copper cannot displace silver from its salt solution.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion .
B. If both assertion and reason are true but reason is not the correct explanation of assertion .
C. If assertion is true but reason is false .
D. If both assertion and reason are false .

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states: "When a copper wire is dipped in silver nitrate solution, there is no change in the color of the solution."

- When copper wire is placed in a silver nitrate solution (AgNO₃), a reaction occurs. Copper (Cu) is more reactive than silver (Ag) and can displace silver from its salt solution.
- The chemical reaction can be represented as:
\[ \text{Cu (s)} + 2\text{AgNO}_3 (aq) \rightarrow \text{Cu(NO}_3\text{)}_2 (aq) + 2\text{Ag (s)} \]
- In this reaction, copper displaces silver, leading to the formation of copper(II) nitrate and a deposit of silver metal. This results in a change in the color of the solution due to the formation of a new compound and the deposition of silver.

**Conclusion**: The assertion is **incorrect** because there is a change in color when copper is dipped in silver nitrate solution.

### Step 2: Analyze the Reason
The reason states: "Copper cannot displace silver from its salt solution."

- This statement is also incorrect. According to the electrochemical series, copper is placed above silver, which means it is more reactive and can displace silver from its salt solution.
- Therefore, copper can indeed displace silver from silver nitrate solution.

**Conclusion**: The reason is **incorrect** because copper can displace silver from its salt solution.

### Final Conclusion
Both the assertion and the reason are incorrect. Therefore, the correct answer is that both the assertion and the reason are false.

### Summary of the Solution
- Assertion: Incorrect (there is a color change when copper is dipped in silver nitrate).
- Reason: Incorrect (copper can displace silver from its salt solution).
- Final Answer: Both assertion and reason are false.

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