Which of the following statements is/are correct?
I. LPG is non-flammable substance, that is why it is used for cooking at our homes.
II. On burning, camphor produces flame while charcoal does not produce flame.
III. Sulphur is a non-combustible non-metal.
IV. Combustion of phosphorus is an example of rapid combustion.

Options

A. II and IV only
B. II only
C. I, III and IV only
D. None of these

Explanation

To determine which of the statements is/are correct, let's analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement I: LPG is a non-flammable substance, that is why it is used for cooking at our homes.**
- **Analysis:** LPG (Liquefied Petroleum Gas) is a mixture of propane and butane, both of which are flammable gases. Therefore, this statement is **false**. LPG is used for cooking precisely because it is flammable and can produce a flame.

2. **Statement II: On burning, camphor produces flame while charcoal does not produce flame.**
- **Analysis:** Camphor is a flammable substance that vaporizes when heated and produces a flame. In contrast, charcoal, when burned, does not produce a visible flame as it burns slowly and primarily produces heat. Therefore, this statement is **true**.

3. **Statement III: Sulphur is a non-combustible non-metal.**
- **Analysis:** Sulphur is a combustible non-metal. It can burn in the presence of oxygen to form sulfur dioxide (SO₂). Therefore, this statement is **false**.

4. **Statement IV: Combustion of phosphorus is an example of rapid combustion.**
- **Analysis:** Phosphorus is known to undergo spontaneous combustion when exposed to air, which is a form of combustion that occurs very quickly and violently. However, it is more accurately described as spontaneous combustion rather than rapid combustion. Therefore, this statement is **false**.

### Conclusion:
- The only correct statement is **Statement II**.

### Final Answer:
- The correct statement is: **II only.**

---