How will you prepare picric acid from phenol ?

Explanation

To prepare picric acid from phenol, follow these steps:

### Step 1: Understand the Structure of Picric Acid
Picric acid, also known as 2,4,6-trinitrophenol, contains three nitro groups (-NO2) attached to a phenolic ring. The nitro groups are located at the 2nd, 4th, and 6th positions of the benzene ring.

### Step 2: Prepare the Reaction Conditions
To synthesize picric acid from phenol, you will need concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4). The sulfuric acid acts as a catalyst and helps in the nitration process.

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