Answer the following questions given below on the basic of the given details:
Petrol, LPG, Wood, Paper, Sand, Water, Glass
Name two non-combustible substances.

Answer

To answer the question about identifying two non-combustible substances from the given list (Petrol, LPG, Wood, Paper, Sand, Water, Glass), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Combustibility**:
- Combustible substances are those that can easily catch fire and burn. Examples include petrol, LPG, wood, and paper.
- Non-combustible substances are those that do not easily ignite or burn.

2. **Analyze the Given Substances**:
- From the list provided:
- Petrol: Combustible
- LPG: Combustible
- Wood: Combustible
- Paper: Combustible
- Sand: Non-combustible
- Water: Non-combustible
- Glass: Non-combustible

3. **Identify Non-Combustible Substances**:
- Among the substances listed, sand, water, and glass are noted as non-combustible.
- We need to name two of these.

4. **Select Two Non-Combustible Substances**:
- We can choose any two from sand, water, and glass. For this solution, we will select:
- Sand
- Water

### Final Answer:
The two non-combustible substances are **Sand** and **Water**.

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