What happens when :
(i) An alkyl halide reacts with `AgNO_(2)` and product is reduced.
(ii) An alkyl halide is treated with `AgCN` and product is hydrolysed.
(iii) Methyl magnesium bromide is treated with cyanogens chloride.

Explanation

Let's break down the question step by step.

### Step 1: Reaction of Alkyl Halide with AgNO₂
When an alkyl halide (for example, CH₃Cl) reacts with silver nitrite (AgNO₂), the following occurs:
- The alkyl halide reacts with AgNO₂, resulting in the formation of an alkyl nitrite (CH₃NO₂) and the precipitation of silver chloride (AgCl).

**Chemical Equation:**
\[ \text{CH}_3\text{Cl} + \text{AgNO}_2 \rightarrow \text{CH}_3\text{NO}_2 + \text{AgCl} \downarrow \]
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