(a) Draw the structures of the following compounds
(i) 4 Chloropentan 2 one
(ii) But 2 en 1 al

Explanation

To solve the question, we need to draw the structures of the two given organic compounds: 4-chloropentan-2-one and but-2-ene-1-al. Let's break this down step by step.

### Step 1: Draw the structure of 4-chloropentan-2-one

1. **Identify the components**:
- "Pentan" indicates a straight chain of 5 carbon atoms.
- "2-one" indicates that there is a ketone group (C=O) on the second carbon.
- "4-chloro" indicates that there is a chlorine (Cl) atom on the fourth carbon.
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