What is autocatalysis ?

Options

A. Oxidation of NO to `NO_2`
B. Oxidation of oxalic acid by acidified `KM_2I`
C. Decomposition of `KCL_3` to KCI and `O_2`
D. Oxidation of oxalic acid by acidified `KM_2I`

Explanation

### Step-by-Step Solution:

1. **Definition of Autocatalysis**:
Autocatalysis refers to a type of chemical reaction in which one of the products of the reaction acts as a catalyst for that same reaction. This means that as the reaction proceeds and products are formed, one of these products helps to speed up the reaction itself.

2. **Mechanism of Autocatalysis**:
In autocatalytic reactions, the rate of reaction increases as more product is formed. This is because the product that acts as a catalyst enhances the reaction rate, leading to an accelerated conversion of reactants to products.

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