Three compound X, Y and Z were taken into three different laboratory vessels annd they are carried out by a chemist in his car. The car caught fire due to short circuit and the chemist came out of the car and noticed following observations:
Q. Compound Y produced two oxides, among these oe oxide turns anhydrous `CuSO_(4)` into blue and other gas slows down fire in the car, then Y is

Options

A. `NH_(4)NO_(2)`
B. `NaHCO_(3)`
C. `MgC_(2)O_(4)`
D. `NH_(4)NO_(3)`

Explanation

To solve the question regarding compound Y, we need to analyze the observations made by the chemist after the car caught fire. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Observations
The chemist observed that compound Y produces two oxides:
1. One oxide turns anhydrous CuSO4 (copper sulfate) into blue.
2. The other gas slows down the fire in the car.

### Step 2: Understand the Chemistry of CuSO4
Anhydrous copper sulfate is white in color. When it is hydrated (i.e., when it reacts with water), it turns blue. This indicates that one of the products formed from compound Y must be water.

### Step 3: Identify the Compounds
We need to find a compound Y that can produce both water and a gas that extinguishes fire.

### Step 4: Analyze the Options
1. **Option 1: NH4NO2 (Ammonium nitrite)**
- On heating, it decomposes to produce nitrogen gas (N2) and water.
- N2 does not extinguish fire, so this option is incorrect.

2. **Option 2: NaHCO3 (Sodium bicarbonate)**
- On heating, it decomposes to form sodium carbonate (Na2CO3), carbon dioxide (CO2), and water.
- Water can turn anhydrous CuSO4 blue, and CO2 is known to extinguish fire. Thus, this option fits both observations.

3. **Option 3: MgC2O4 (Magnesium oxalate)**
- On heating, it produces magnesium oxide (MgO) and carbon dioxide (CO2).
- While CO2 can extinguish fire, MgO does not turn CuSO4 blue. Therefore, this option is incorrect.

4. **Option 4: N2O (Nitrous oxide)**
- On heating, it produces N2 and water.
- While water can turn CuSO4 blue, N2 does not extinguish fire. Thus, this option is incorrect.

### Step 5: Conclusion
Based on the analysis of the options, the only compound that satisfies both conditions (producing water and a gas that extinguishes fire) is **NaHCO3 (Sodium bicarbonate)**.

### Final Answer
Therefore, compound Y is **NaHCO3 (Sodium bicarbonate)**.

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