Question

when a forest fuel burns in insufficent amount of air , ___________is formed fill in blank

Answer 1

Answer:

Yes

Explanation:

gives out carbon dioxide and water vapours. Hydrocarbons are made up of carbon and hydrogen. When they are burnt in the presence of oxygen, carbon reacts with oxygen to form carbon dioxide and hydrogen reacts with oxygen to form water vapours.

Example: When we burn methane gas in the presence of a sufficient amount of oxygen, it gives carbon dioxide gas and water vapours.

CH4+2O2→CO2+2H2O

Answer 2

When a forest fuel burns in insufficient amount of air, yellow flame is formed.

Explanation:

When the oxygen supply or air supply is insufficient,then the fuels burn incompletely producing mainly a yellow flame. The yellow flame is caused by the glow of hot unburntcarbon particles produced due to incomplete combustion of fuel. This yellow flame produces light,so it is said to be luminous flame.