Question

substances that do not catch fire easily are called ....​

Answer 1

Answer:

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.

Explanation:

Answer 2

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These are called inflammable substances