This PowerPoint presentation introduces combustion and discusses the key requirements and types of combustion. It also includes questions to test understanding. Specifically: - There are three requirements for combustion: a combustible substance, continuous oxygen supply, and temperature above the ignition point. - Slow combustion occurs at a slow or moderate rate, while explosion involves a large release of heat and light. - Multiple choice and true/false questions assess knowledge of combustion zones, fuels, calorific values, and other concepts covered in the presentation.

1. Welcome to our Powerpoint Presentation
 MADE BY:- ADITYA AGRAWAL
MANAN BAFNA
ANKIT SAHU
DARSHAN
KOCHAR
 GUIDED BY:-KHUSHBOO MAM

7.  There must be a combustible substance
 There must be a continuous supply of
oxygen.
 The temperature of combustible material
should be above its ignition temperature

10.  When a combustible materials burns at
slow or moderate rate , it is called Slow
Combustion .
The combustion which is accompanied by
the release of heat, light, sound and large
amount of heat is called Explosion.

16. Q.1 One Word Answer
1.Which is the hottest part of the flame?
Ans. Outter most zone(non-luminous)
2.What is the fuel of our body?
Ans. Food
3. The lowest temperature at which a
substance catches fire is called?
Ans. Ignition or kindling temperature.

17. 4.Which part of the flame is luminous?
Ans. Middle zone.
5. The calorific value of fuel is
expressed in?
Ans. Kilojoules per kilogram (kJ/kg).
6.Which fuel have a low ignition
temperature?
Ans. Good fuel

18. 1. Is oxygen is important for combustion.
True
2. liquid is only fuel.
False
3.Innermost zone of candle flame is the
Hottest zone .
False

19. 4.There are four types of combustion.
True.
5.There are two zones of candle.
False.
6.Solid fuel have less calorific value than
liquid and gaseous fuels.
True.
7.A good fuel should have a high calorific
value.
True.

20. 1.Wood
Ans. Combustible
2.Rubber
Ans. Non-combustible
3.Plastic
Ans. Non-combustible