Name the gas evolved in each of the following cases : Addition of dilute sulphuric acid to sodium sulphite.

Explanation

To determine the gas evolved when dilute sulfuric acid is added to sodium sulfite, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this case are dilute sulfuric acid (H₂SO₄) and sodium sulfite (Na₂SO₃).

2. **Write the Initial Reaction**: When dilute sulfuric acid is added to sodium sulfite, a chemical reaction occurs. The reaction can be represented as:
\[
...