Cold solution of barium nitrite on mixing with sulphuric acid produces :

Options

A. `BaSO_(4)+HNO_(2)`
B. `BaSO_(4)+HNO_(3)`
C. `BaSO_(4)+NO_(2)`
D. `BaSO_(4)+N_(2)+O_(2)`

Answer

To solve the question regarding the reaction between cold barium nitrite and sulfuric acid, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
The reactants in the reaction are barium nitrite (Ba(NO2)2) and sulfuric acid (H2SO4).

2. **Write the Chemical Equation**:
When barium nitrite reacts with sulfuric acid, the reaction can be represented as:
\[ Ba(NO_2)_2 + H_2SO_4 \rightarrow BaSO_4 + 2 HNO_2 \]
Here, barium nitrite reacts with sulfuric acid to produce barium sulfate and nitrous acid.

3. **Identify the Products**:
From the balanced equation, the products formed are:
- Barium sulfate (BaSO4)
- Nitrous acid (HNO2)

4. **Conclusion**:
Therefore, the cold solution of barium nitrite on mixing with sulfuric acid produces barium sulfate and nitrous acid.

### Final Answer:
The products are barium sulfate and nitrous acid.

---