write a flowchart on combustible substances and non-combustible substances
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combustible substance
1) A substance which burns in air and tends to produce heat and light is known as combustible substance.
2) Necessary ingredients - Heat, Fuel and Air.
3) Exp - Diesel, Petrol, Kerosene.
non-combustible substance
1) Non-combustion substance are certain substance which are not combustible in the presence of air.
2) Will not burn on being exposed to flame.
3) Exp - Glass, Stones.
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