2.
Fuel must be heated to its before it starts burning.3.Fire can be controlled by _ oneor more requirements essential for producing fire.

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Solution

2. Fuel must be heated to its ignition temperature before it starts burning.
3. Fire can be controlled by limiting one or more requirements essential for producing fire.

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Similar questions

Fill in the blanks:

(a) Burning of wood and coal causes _______ __ of air.

(b) A liquid fuel used in homes is ___________.

(d) Fire produced by oil cannot be controlled by ________ _.

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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