Which of the following has the lowest ignition temperature?

The correct answer indicates that kerosene has the lowest ignition temperature among the listed substances. Ignition temperature refers to the minimum temperature at which a substance must be heated to ignite and sustain combustion. Kerosene's ignition temperature is relatively low compared to the other options, which means it can catch fire and burn more easily under certain conditions.

Gasoline typically has a higher ignition temperature than kerosene, making it less likely to ignite at lower temperatures. Ethanol, while flammable, generally has a higher ignition point than that of kerosene as well. Acetone is another highly flammable liquid, but its ignition temperature is also higher than that of kerosene.

Understanding these characteristics is crucial for firefighters and professionals working with flammable materials, as it helps them assess the risks and take appropriate precautions when handling such substances.