Write down the reactions involved in the preparation of the following using the reagents indicated in parenthesis: 'Acetoxime from acetaldehyde'.
`[K_(2)Cr_(2)O_(7)//H^(+), Ca(OH)_(2)`, and `NH_(2)OH.HCl]`

Explanation

To prepare acetoxime from acetaldehyde using the given reagents, we will follow these steps:

### Step 1: Oxidation of Acetaldehyde
- **Reaction**: Acetaldehyde (CH₃CHO) is oxidized to acetic acid (CH₃COOH) using potassium dichromate (K₂Cr₂O₇) in the presence of an acid (H⁺).
- **Equation**:
\[ CH₃CHO + [O] \xrightarrow{K₂Cr₂O₇/H^+} CH₃COOH \]
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