Statement-1: `NH_(4)NO_(3)` evolve a gas on addition of NaOH.
Statement-2: Same gas is evolved on addition of NaoH on `NaNO_(3)` in presence of Cu.

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 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 analyze the statements provided in the question, we will break down the reactions involved and determine the correctness of each statement.

### Step 1: Analyze Statement 1
**Statement 1:** `NH4NO3` evolves a gas on the addition of NaOH.

- **Reaction:** When ammonium nitrate (NH4NO3) is treated with sodium hydroxide (NaOH), the following reaction occurs:

\[ NH_4NO_3 + NaOH \rightarrow NaNO_3 + NH_3 + H_2O \]

- **Gas evolved:** The gas evolved in this reaction is ammonia (NH3).

- **Conclusion:** Statement 1 is **correct** because NH4NO3 does indeed evolve ammonia gas when reacted with NaOH.

### Step 2: Analyze Statement 2
**Statement 2:** The same gas is evolved on the addition of NaOH on `NaNO3` in the presence of Cu.

- **Reaction:** When sodium nitrate (NaNO3) is treated with sodium hydroxide (NaOH) in the presence of copper (Cu), the following reaction occurs:

\[ NaNO_3 + NaOH + Cu \rightarrow NaNO_2 + NH_3 + H_2O \]

- **Gas evolved:** The gas evolved in this reaction is also ammonia (NH3).

- **Conclusion:** Statement 2 is also **correct** because ammonia gas is evolved when NaNO3 reacts with NaOH in the presence of copper.

### Step 3: Determine the Relationship Between the Statements
- Both statements are correct, but they describe different reactions that lead to the evolution of the same gas (NH3).
- Statement 2 does not serve as an explanation for Statement 1, as they are independent reactions.

### Final Conclusion
- Both statements are true, but Statement 2 is not the correct explanation of Statement 1.

### Answer:
- The correct option is: Statement 1 is true, Statement 2 is true, and Statement 2 is not the correct explanation of Statement 1.

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