Question

State the condition under which a piece of wood, present in air can start burning

Answer 1

Answer:

Explanation:

The lowest temperature at which a combustible substance starts burning in the presence of air is called ignition temperature. The substance that has very low ignition temperature and hence, can catch fire easily are called inflammable substances.

Answer 2

Answer:when igniting temperature is reached.

Explanation:

Igniting temperature is the lowest temperature of a combustible substance which it attains to start burning. When in atmosphere or in contact with air the wood piece needs to attain it's ignition temperature to burn.

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