Answer :
Final answer:
A multipurpose dry chemical extinguisher is rated for Class A, B, and C fires, making it an essential device for combating various types of fires.
Explanation:
A multipurpose dry chemical extinguisher is designed to combat various types of fires by interrupting the chemical reaction of the fire triangle. Specifically, it is rated for Class A, B, and C fires. Class A fires involve ordinary combustibles such as wood, paper, and cloth; Class B fires involve flammable liquids like gasoline, oil, and grease; and Class C fires involve energized electrical equipment. Multipurpose dry chemical extinguishers are versatile and commonly used in many settings due to their ability to handle different fire scenarios.
The multipurpose dry chemical extinguisher's capability to address Class A, B, and C fires makes it an essential safety device in both residential and commercial spaces. Its effectiveness stems from the chemical agents used, such as methyl chloride and isobutyl chloride, which are effective in extinguishing the fire by creating a barrier between the fuel and the oxygen source, thus stopping the fire's spread.
