Name the gas evolved in each of the following cases :Iron sulphide is treated with aqueous sulphuric acid.

Explanation

To solve the question regarding the gas evolved when iron sulphide is treated with aqueous sulphuric acid, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The reactants in this reaction are iron sulphide (FeS) and aqueous sulphuric acid (H₂SO₄).

2. **Write the Chemical Reaction**: When iron sulphide reacts with sulphuric acid, the reaction can be represented as:
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