Combustion and flame quiz

Combustion is a ____________ process

• Physical

• There is no process involved in the process of combustion.

• Chemical

• Both

What is this called

• combustion's cycle

• Fire tricolour

• triangle of fire's combustion

• Fire triangle

Why did the flame die in case (c) ?

• It didn't want to

• Not sufficient elements

• Not enough air

• I don't know

Define combustion....

• The process of burning a substance in the presence of oxygen to give out heat and light

• Combustion is a chemical process where something burns for our use

• When something burns in the presence of oxygen, it is called combustion

• When a particular object catches fire, in the presence of air (oxygen), it is called combustion

True or false :

The burning of white phosphorus is a rapid combustion

• TRUE

• FALSE

Is wood a inflammable substance ??

• NO !!

• maybe....

• sometimes

• I don't really know (seriously !!??)

Check all the factors of combustion

• oxygen

• an object

• nitrogen

• Ignition temperature

• combustible substance

Incomplete combustion gives out _________________

• Soot

• CO2

• Water, heat and light

• Everything given here

the outer zone of complete combustion is ________ in colour

• Black

• Blue

• Purple

• Yellow

• orange

The minimum temperature at which a particular substance burns in the presence of _____ is called its ignition temperature..(in nb)