Question

Name any three conditions for the combustion of a substance. Support your answer with examples​

Answer 1

1. Presence of oxygen e.g. A candle cannot burn in a closed jar because it does not get oxygen.
2. reaching of ignition temperature e.g. We cannot burn a candle until we heat the wick to increase temperature.
3. Presence of combustible substance e.g. Combustion cannot take place until it does not get a substance upon which does the combustion take place.

I hope you may understand

Answer 2

Answer:

Combustion is a chemical reaction in which a combustible or flammable substance reacts with a gas (which is a supporter of combustion, for example oxygen), releasing heat. The reaction is exothermic in nature. Necessary factors required for a combustion reaction to take place are :

1. A combustible or flammable substance. For example wood, petroleum, etc.

2. Ignition temperature. The fuel must be at or above this 'ignition temperature'.

3. A gas that is a supporter of combustion (oxygen). An abundant supply of such a gas is required.

Explanation:

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