Write the Structure of
1) TNT
2) Picric Acid
3) Sulphanilic Acid

Explanation

To solve the question, we will draw the structures of the three compounds: TNT, Picric Acid, and Sulphanilic Acid. Let's go through each one step by step.

### 1) Structure of TNT (2,4,6-Trinitrotoluene)

**Step 1:** Start with the structure of toluene. Toluene is a benzene ring with a methyl group (–CH₃) attached to it.

- **Hint:** Remember that toluene is a benzene ring with one methyl group.

**Step 2:** Identify the positions on the benzene ring where the nitro groups (–NO₂) will be attached. For TNT, the nitro groups are attached at the 2nd, 4th, and 6th positions.

- **Hint:** The positions on the benzene ring are numbered starting from the carbon that is attached to the methyl group.

**Step 3:** Draw the structure by placing three nitro groups at the 2, 4, and 6 positions of the toluene structure.

- **Hint:** Make sure to represent the nitro groups correctly as –NO₂.

**Final Structure of TNT:**
```
NO2
|
NO2 -C6H4- CH3
|
NO2
```

### 2) Structure of Picric Acid (2,4,6-Trinitrophenol)

**Step 1:** Start with the structure of phenol, which is a benzene ring with a hydroxyl group (–OH) attached.

- **Hint:** Phenol has a –OH group directly attached to the benzene ring.

**Step 2:** Identify the positions for the nitro groups. For Picric Acid, the nitro groups are also attached at the 2nd, 4th, and 6th positions.

- **Hint:** Similar to TNT, the nitro groups are placed at the same positions on the benzene ring.

**Step 3:** Draw the structure by placing the three nitro groups at the 2, 4, and 6 positions of the phenol structure.

- **Hint:** Ensure that the hydroxyl group is also included in the structure.

**Final Structure of Picric Acid:**
```
NO2
|
NO2 -C6H4- OH
|
NO2
```

### 3) Structure of Sulphanilic Acid (4-Aminobenzenesulfonic Acid)

**Step 1:** Start with the structure of benzene.

- **Hint:** Benzene is a simple six-membered carbon ring with alternating double bonds.

**Step 2:** Identify the functional groups. Sulphanilic Acid has an amino group (–NH₂) at the 4th position and a sulfonic acid group (–SO₃H) at the same position.

- **Hint:** The amino group is a –NH₂ group, and the sulfonic acid group is represented as –SO₃H.

**Step 3:** Draw the structure by placing the amino group at the 4th position and the sulfonic acid group also at the 4th position of the benzene ring.

- **Hint:** The amino group and the sulfonic acid group can be on the same carbon in the benzene ring.

**Final Structure of Sulphanilic Acid:**
```
NH2
|
SO3H-C6H4
```

### Summary of Structures:
1. **TNT (2,4,6-Trinitrotoluene)**
2. **Picric Acid (2,4,6-Trinitrophenol)**
3. **Sulphanilic Acid (4-Aminobenzenesulfonic Acid)**