(a) Illustrate the following name reactions by giving example :
(i) Cannizzaro's reaction
(ii) Clemmensen reduction
(b) An organic compound A contains `69.77`% carbon , `11.63` % hydrogen and rest oxygen .
The molecular mass of the compound is 86. it does not reduce Tollen's reagent but forms an addition compound with sodium hydrogen sulphite and give positive iodoform test.
On vigorous oxidation it gives ethanoic and propanoic acid. Derive the possible structure of compound A .

Explanation

### Step-by-Step Solution

#### Part (a): Illustrate the following name reactions by giving examples

**(i) Cannizzaro's Reaction:**

1. **Definition**: Cannizzaro's reaction occurs when aldehydes that lack alpha hydrogen atoms undergo self-oxidation and reduction in the presence of a strong base (usually concentrated NaOH). This results in the formation of an alcohol and a carboxylic acid salt.

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