Illustrate the following name reactions giving suitable exaple in each case :
(i) Clemmensen reduction
(ii) Hell-Volhard-Zelinsky reaction.
(b) How are the following conversions carried out ?
(i) Ethylcyanide to ethanoic acid
(ii) Butanol to Butanoic acid
(iii) Benzoic acid to m-bromobenzoic acid

Explanation

### Step-by-Step Solution

#### Part A: Name Reactions

**(i) Clemmensen Reduction:**
The Clemmensen reduction is a reaction used to convert aldehydes or ketones into alkanes. This reaction is typically carried out using zinc amalgam (Zn/Hg) and concentrated hydrochloric acid (HCl).

**Example:**
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