long questions answers
1. write the characteristics of non luminous flame?
2. Explain the method that are used to extinguish a fire
Answers
Explanation:
1) Luminous flames are bright yellow in color.
Luminous flames are sooty (produce soot)
Flames are not steady (do not burn steadily).
Luminous flames are not very hot (produce less heat).
Luminous flame produces more light.
Luminous flames do not burn more efficiently. Luminous flames do not get enough oxygen to turn all the carbon that is being burnt into carbon dioxide.
Luminous flames have limited access to oxygen.
Luminous flames are wavy and brightly visible
Luminous flames are not used in experiments (not best for laboratory operations) because it is wavy and sooty in nature.
In a Bunsen burner, luminous flame is formed when the air-hole is closed.
Examples of luminous flames include burning wood, candles, Olympic cauldron etc.
2)The basic methods for extinguishing a fire are to suffocate it by ensuring that it cannot have access to oxygen, to cool it with a liquid such as water which reduces the heat or finally to remove the fuel or oxygen source, effectively removing one of the three elements of fire.
Hope this helps you.
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