Q1 of 87 Page 105

Define ignition temperature of a substance.

Ignition temperature is the lowest temperature at which a substance catches fire. Ignition temperature is different for different substances. For example; LPG, petrol, natural gas, etc. catch fire at very low temperature and thus have low ignition temperature, while wood, coal, etc. have high ignition temperature.


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2

Which of the two has a lower ignition temperature: petrol or kerosene?

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Name the most common fire extinguisher.

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Which is the best fire extinguisher for fires involving electrical equipment and inflammable materials like petrol?

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Name one substance which undergoes spontaneous combustion(or burns in air at room temperature).