What is the type of hybridisation of each carbon in the following compounds :
(i) `CH_3 CH = CH CN`
(ii) `(CH_3 ) _2 C = O`

Explanation

To determine the type of hybridization of each carbon in the given compounds, we will analyze the bonding and the number of sigma (σ) and pi (π) bonds formed by each carbon atom.

### (i) For the compound `CH3 CH = CH CN`:

1. **Identify the carbon atoms**:
- The structure can be represented as:
```
CH3 - CH = CH - CN
...