Question : The lowest temperature at which a substance catches fire is called its ___________.
Option 1: melting point
Option 2: explosion point
Option 3: ignition temperature
Option 4: combustion temperature
Correct Answer: ignition temperature
Solution : The correct option is ignition temperature.
The lowest temperature at which a substance catches fire and sustains combustion is called its ignition temperature . It varies for different materials and is crucial for understanding fire safety, as it represents the point at which spontaneous ignition occurs without an external ignition source.