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प्रश्न
Materials are classified by risk of catching fire. Which of the following falls in the category of Class B materials?
विकल्प
Wood
Magnesium
Grease
Electrical equipment
MCQ
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उत्तर
Grease
Explanation:
Fire classifications help determine the right extinguisher to use. While Wood is Class A (ordinary solids) and Magnesium is Class D (combustible metals), Grease is a flammable liquid, placing it firmly in Class B.
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