The substances which have every low ignition temperature will

Options

A. Catch fire easily
B. Will not catch fire
C. Catch fire after some time
D. None of these

Answer

### Step-by-Step Solution:

1. **Understanding Ignition Temperature**:
- Ignition temperature is defined as the minimum temperature at which a substance starts to burn.

2. **Analyzing the Question**:
- The question states that the substances have a very low ignition temperature. This means that these substances can ignite easily.

3. **Implications of Low Ignition Temperature**:
- If a substance has a low ignition temperature, it indicates that it can catch fire with minimal heat. Therefore, such substances are more flammable.

4. **Evaluating the Options**:
- Option 1: "Catch fire easily" - This is true because a low ignition temperature means easy ignition.
- Option 2: "Will not catch fire" - This is false because low ignition temperature implies that it will catch fire.
- Option 3: "Catch fire after some time" - This is also false as it contradicts the definition of low ignition temperature.
- Option 4: "None of these" - This is incorrect since option 1 is valid.

5. **Conclusion**:
- The correct answer is that substances with very low ignition temperatures will "catch fire easily."