Basic
General
Concept
100

What is combustion?

Burning a substance in presence of air or oxygen with release of energy

100

What is the chemical formula for methane?

CH4

100

Name one common example of spontaneous combustion.

Forest fire

200

Name a combustible substance.

LPG, Kerosene, Paper, Cloth, Wood, Hydrogen

200

Name the process characterized by the sudden release of energy and high-pressure gases.

Explosion

200

What does the term “smoldering” refer

Slow combustion

300

What type of combustion occurs at a low temperature without a flame?

Slow combustion

300

What are hydrocarbons primarily composed of?

Hydrogen and carbon

300

Can wood catch fire? (Yes or No)

Yes

400

Define spontaneous combustion.

Causes a material to ignite without an external heat source. Example: Forest fire

400

What does incomplete combustion produce in addition to water?

Carbon monoxide, soot, heat, light

400

Name a common fuel used for cooking.

LPG

500

What is produced during complete combustion of hydrocarbons?

Carbon dioxide, water, heat, light

500

What type of combustion releases a large amount of heat and light in a short time?

Rapid combustion
500

What gas is produced when hydrocarbons burn completely?

Carbon dioxide