(a) Illustrate the following name reactions giving a chemical equations in each case :
(i) Clemmensen reaction
(ii) Cannizzaro's reaction
(b) Describe how the following conversions can be brought about :
(i) Cyclohexanol to cyclohexan 1 - one
(ii) Ethylbenzene to benzoic acid
(iii) Bromobenzene to benzoic acid

Explanation

### Step-by-Step Solution

#### (a) Illustrate the following name reactions giving a chemical equation in each case:

**(i) Clemmensen Reaction:**

The Clemmensen reaction is a reduction process where aldehydes or ketones are converted into alkanes using zinc amalgam and concentrated hydrochloric acid (HCl).

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