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Hazardous Materials Emergency Response Flashcards

7 cards from real F89 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Hazardous Materials Emergency Response flashcards as text
  1. What number scale is used in each quadrant of the NFPA 704 diamond?

    Answer: 0 to 4, with 4 most severe

    NFPA 704 rates hazards from 0 (minimal) to 4 (severe).

  2. The yellow quadrant of an NFPA 704 diamond indicates:

    Answer: Instability/reactivity

    Yellow rates how readily a material may detonate, decompose, or react violently.

  3. A large refrigerant leak occurs in an enclosed mechanical room. What is the main life-safety hazard to occupants?

    Answer: Oxygen displacement causing asphyxiation

    Refrigerant vapors are heavier than air and can displace oxygen in enclosed spaces.

  4. Under OSHA's Hazard Communication Standard, when must Safety Data Sheets be accessible to employees?

    Answer: Readily accessible during each work shift

    OSHA requires SDSs to be readily accessible to employees in their work areas during each shift.

  5. Which description fits chlorine gas?

    Answer: Greenish-yellow with a bleach-like odor, and heavier than air

    Chlorine is a greenish-yellow, pungent gas that is heavier than air and settles in low areas.

  6. A custodian mixes bleach with an ammonia-based cleaner in a restroom. Which toxic gas is produced?

    Answer: Chloramine

    Mixing bleach and ammonia releases toxic chloramine vapors that irritate the lungs.

  7. On a GHS label, which signal word is used for the more severe hazards?

    Answer: Danger

    GHS uses 'Danger' for more severe hazard categories and 'Warning' for less severe ones.

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