How will you obtain the following from sulphuric acid ?
(a) `SO_2`
(b) `SO_3`
(c) `SO_2 Cl_2`.

Explanation

To obtain the compounds \( SO_2 \), \( SO_3 \), and \( SO_2Cl_2 \) from sulfuric acid (\( H_2SO_4 \)), we can follow these steps:

### (a) Preparation of \( SO_2 \) (Sulfur Dioxide)

1. **Reacting Sulfur with Concentrated Sulfuric Acid**:
- Boil sulfur (\( S \)) and treat it with concentrated sulfuric acid (\( H_2SO_4 \)).
- The reaction can be represented as:
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