Which of the following is NOT a Class A fire?

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Prepare for the OSHA 501 Industry Trainer Test. Review with flashcards and multiple-choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

Which of the following is NOT a Class A fire?

Explanation:
This tests understanding of fire classifications by fuel type. Class A covers ordinary combustibles such as wood, paper, and cotton. Gasoline is a flammable liquid, which places it in Class B, not Class A. That’s why gasoline fires are not Class A fires. The other items listed—paper, wood, and cotton—are classic examples of Class A fuels. For a gasoline (Class B) fire, you use extinguishing methods appropriate for flammable liquids (like dry chemical, foam, or CO2); water can spread the fire by spreading the fuel.

This tests understanding of fire classifications by fuel type. Class A covers ordinary combustibles such as wood, paper, and cotton. Gasoline is a flammable liquid, which places it in Class B, not Class A. That’s why gasoline fires are not Class A fires. The other items listed—paper, wood, and cotton—are classic examples of Class A fuels. For a gasoline (Class B) fire, you use extinguishing methods appropriate for flammable liquids (like dry chemical, foam, or CO2); water can spread the fire by spreading the fuel.

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