`Xunderset("heat")toMnO_(2)+Y`
`Y+H_(2)SO_(4)+NaCltoZ` (pungent smelling gas)
Identify X, Y and Z

Options

A. `X=K_(2)MnO_(4),Y=KMnO_(4),Z=Cl_(2)`
B. `Z=KMnO_(4),Y=K_(2)MnO_(4),Z=Br_(2)`
C. `X=KMnO_(4),Y=O_(2),Z=Cl_(2)`
D. `X=KMnO_(4),Y=K_(2)KnO_(4),Z=SO_(2)`

Answer

To solve the given question, we need to identify the substances X, Y, and Z based on the reactions described.

### Step 1: Analyze the first reaction
The first part of the question states that when X is heated, it produces MnO₂ and a product Y.

- The only common compound that can yield MnO₂ upon heating is potassium permanganate (KMnO₄). When KMnO₄ is heated, it decomposes to form MnO₂, potassium manganate (K₂MnO₄), and oxygen gas (O₂).

Thus, we can deduce:
- **X = KMnO₄**

### Step 2: Identify product Y
From the decomposition of KMnO₄, we can conclude that Y is potassium manganate (K₂MnO₄).

So:
- **Y = K₂MnO₄**

### Step 3: Analyze the second reaction
The second part of the question states that Y (which we identified as K₂MnO₄) reacts with H₂SO₄ and NaCl to produce Z, which is a pungent-smelling gas.

- When K₂MnO₄ reacts with H₂SO₄ and NaCl, it produces K₂SO₄, MnSO₄, Na₂SO₄, Cl₂ (chlorine gas), and water.

The pungent-smelling gas produced in this reaction is chlorine (Cl₂).

Thus:
- **Z = Cl₂**

### Final Identification
Based on the analysis:
- **X = KMnO₄**
- **Y = K₂MnO₄**
- **Z = Cl₂**

### Summary
- **X** is potassium permanganate (KMnO₄).
- **Y** is potassium manganate (K₂MnO₄).
- **Z** is chlorine gas (Cl₂).