Give tests to distinguish between the following pairs of compounds :
(i) Ethanol and Propanal
(ii) Phenol and Benzoic acid
(iii) Benzaldehyde and Acetophenone

Explanation

To distinguish between the given pairs of compounds, we can use specific chemical tests that exploit the differences in their functional groups. Here’s a step-by-step solution for each pair:

### (i) Distinguishing Ethanol and Propanal

1. **Identify the Compounds**:
- Ethanol (C2H5OH) is an alcohol.
- Propanal (C3H6O) is an aldehyde.

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