what is Ignition temperature define?
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the tempratuere at which substance start burning
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ignition temperature. : the lowest temperature at which a combustible substance when heated (as in a bath of molten metal) takes fire in air and continues to burn — called also autogenous ignition temperature; compare fire point.
OR
is the lowest temperature at which it spontaneously ignites in normal atmosphere without an external source of ignition, such as a flame or spark. This temperature is required to supply the activation energy needed for combustion.
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