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Subjects
Science CBSE
Class 7 New
Changes around us: Physical and Chemical
Pumpa Practice Questions
22.
Fire triangle
Exercise condition:
4
m.
Briefly answer the following:
What are the three requirements needed for the process of combustion to occur?
For the process of combustion to occur, three important requirements are needed:
1.
A
non-combustible substance
insulator
Magnetic material
combustible substance
(also called
fuel
)
2.
Oxygen
Helium
Neon
Nitrogen
3.
Moisture
Heat
Sound
Cold
that helps the fuel reach its
boiling point
freezing point
ignition temperature
condensation point
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