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Maharashtra State BoardSSC (English Medium) 8th Standard

Fire

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Fire:

Fire is a chemical reaction that occurs when fuel, heat, and oxygen come together in the right conditions. This process is known as combustion, and it produces heat, light, and various gases. Fire is a powerful natural force that has been essential to human civilisation for warmth, cooking, and protection, but it can also be extremely dangerous and destructive if not controlled.

Type of Fire Description Extinguishing Method Example
Class A (Solid) Fires caused by solid materials like wood, clothes, paper, etc. Use water to cool and remove heat from the burning material. Extinguish a campfire using water.
Class B (Liquid) Fires from flammable liquids like petrol, oil, solvents, and paints. Do not use water; use foam or dry powder extinguishers. Cover an oil fire in a pan with a lid or use a special extinguisher.
Class C (Gas) Fires from flammable gases like propane, butane, and LPG. Stop the gas flow; use dry powder extinguishers. Turn off the gas supply and use a gas fire extinguisher.
Class D (Metal) Fires from combustible metals like potassium, sodium, and magnesium. Use special powders; never use water, as it may cause explosions. Use a dry powder extinguisher on burning magnesium shavings.
Class E (Electrical) Fires caused by electrical equipment and wiring. Disconnect power; use CO2 or dry powder extinguishers. Unplug a burning computer and use a CO2 extinguisher.

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