How can fuel combust into a GIANT FIRE? | Hydrocarbon Combustion Mechanism

The video explains the combustion process, focusing on hydrocarbons like octane. It describes how combustion occurs, the role of oxygen, and the energy release involved. The video also covers the radical chain reaction mechanism and the conversion of hydrocarbons into carbon dioxide and water.

What happens when gasoline is poured on a small flame?

• The flame extinguishes.

• The flame size decreases.

• The flame size increases dramatically.

• The flame remains unchanged.

What is a necessary condition for the combustion of octane?

• Absence of heat

• Presence of nitrogen

• Presence of oxygen

• Absence of light

What is the role of oxygen's singlet state in combustion?

• It slows down the reaction.

• It initiates a radical chain reaction.

• It prevents combustion.

• It makes oxygen less reactive.

What initiates the conversion of oxygen to its singlet state?

• Lack of fuel

• Presence of water

• Energy input from heat or light

• Absence of light

What is the first step in the radical mechanism of octane combustion?

• Oxygen release

• Water formation

• Hydrogen abstraction

• Formation of carbon dioxide

What is a hydroxyl radical?

• A type of fuel

• A stable molecule

• A form of water

• A reactive species

What is the result of the complete combustion of hydrocarbons?

• Formation of hydrogen gas

• Formation of carbon monoxide

• Formation of carbon dioxide and water

• Formation of nitrogen gas

What is the nature of the energy released during combustion?

• Non-reactive

• Neutral

• Exothermic

• Endothermic

What is the final product of the radical chain reaction in octane combustion?

• Oxygen

• Carbon monoxide

• Methane

• Carbon dioxide

What is the significance of the radical chain reaction in combustion?

• It prevents energy release.

• It stops the reaction.

• It accelerates the breakdown of hydrocarbons.

• It cools down the system.