Substance which vaporise during burning gives_________.

sound

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flame

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combustion

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none of these

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Solution

The correct option is B
flame

When substance burns the compound is supplied with heat, the molecules gain energy and move apart and get converted into vapour phase. As the substances vaporise during burning, flame is produced.

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Similar questions

Fill in the following blanks with suitable words :

(a) A fuel must be heated to its___ before it starts burning.

(b) The most common supporter of combustion around us is___

(d) A liquid fuel used in homes is___

(e) The amount of heat evolved when 1 kg of a fuel is burnt completely is called its___

(f) The substances which vaporise during burning, give___

(g) Burning of wood and coal causes___ of air.

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