Answer :

Final answer:

Purple-K fire extinguishers contain Potassium Bicarbonate (KHCO3) as the main ingredient, which is effective in putting out flammable liquid, gas, and electrical fires.

Explanation:

The main ingredient in purple-K fire extinguishers is Potassium Bicarbonate (KHCO3).

Purple-K fire extinguishers, also known as potassium bicarbonate extinguishers, are known for their effectiveness in combating Class B and Class C fires involving flammable liquids, gases, and electrical fires. The potassium bicarbonate works by interfering with the chemical reactions that sustain the fire, effectively disrupting the chain reaction and extinguishing the flames.

Purple-K fire extinguishers are commonly used in industrial settings, such as manufacturing plants and laboratories, as well as in certain commercial and residential applications.