Soda acid fire extinguishes the fire by?

🔑 Key Points
🔥 Soda-Acid Fire Extinguishers
✳️ The correct answer is Cutting the supply of air.
✳️ The reaction of acids with metal hydrogen carbonates is utilized in fire extinguishers to produce carbon dioxide.
✳️ Soda-acid fire extinguishers contain sodium bicarbonate and sulphuric acid.

🔑 Chemical Reaction
✔️ The reaction involved:
2NaHCO₃ + H₂SO₄ → Na₂SO₄ + 2H₂O + 2CO₂

📌 Important Points
✳️ This extinguisher is used for Class A fires.

🔑 Working Principle
✔️ The functioning of soda-acid fire extinguishers is based on three conditions:
➤ Cooling the combustible material below its ignition temperature.
➤ Cutting off the supply of air.
➤ Simultaneously cooling the material and cutting the air supply.