Classify the following into elements, compounds or mixtures :
(i) Water (ii) milk (iii) tea (iv) iron (v) sugar (vi) smoke (vii) sulphur (viii) 22 carat gold (ix) iodised table salt (x) gasoline.

Explanation

To classify the given substances into elements, compounds, or mixtures, we will analyze each one based on their definitions.

### Step-by-Step Solution:

1. **Water (H₂O)**:
- Water is made up of two elements, hydrogen and oxygen, chemically combined in a fixed ratio (2:1).
- **Classification**: **Compound**

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