Toluene reacts with bromine in the presence of the light to give benzyl bromide, while in presence of `FeBr_(3)` it gives p-bromotoluene. Give explanation for the above observation.

Explanation

To explain the reactions of toluene with bromine under different conditions, we can break down the process into several steps:

### Step 1: Understanding the Reactants
Toluene (C6H5CH3) is an aromatic compound that contains a methyl group (-CH3) attached to a benzene ring. When it reacts with bromine (Br2), the nature of the reaction depends on the conditions under which it occurs.

### Step 2: Reaction in the Presence of Light
When toluene reacts with bromine in the presence of light (UV light), the reaction proceeds via a free radical mechanism.

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