Practice Test Geeks(CPC) Certified Professional Chemist Practice Test
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Laboratory Safety & Compliance Flashcards

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

Read the first 7 Laboratory Safety & Compliance flashcards as text

  1. Which GHS pictogram indicates an acute toxicity hazard (fatal or toxic category 1–3)?

    Answer: Skull and crossbones

    The skull and crossbones GHS pictogram (GHS06) designates acute toxicity categories 1–3, signaling fatal or highly toxic substances.

  2. What is the maximum allowable quantity of flammable liquids (flash point < 73 °F) permitted outside an approved flammable storage cabinet in a single lab, per NFPA 30?

    Answer: 5 gallons

    NFPA 30 limits flammable liquid storage outside approved cabinets in a single lab area to 25 gallons, though many institutions set stricter limits; the NFPA 45 laboratory standard often restricts it to 10 gallons, but the NFPA 30 default is 25 gallons.

  3. Under EPA RCRA regulations, a small-quantity generator (SQG) must remove hazardous waste from the site within:

    Answer: 180 days

    SQGs (generating 100–1,000 kg/month of hazardous waste) are allowed to accumulate waste on-site for up to 180 days before required removal.

  4. The term 'IDLH' in occupational health refers to a concentration that is:

    Answer: Immediately dangerous to life or health

    IDLH (Immediately Dangerous to Life or Health) is the maximum airborne concentration from which a worker could escape within 30 minutes without irreversible health effects or escape impairment.

  5. Which type of laboratory ventilation system recirculates air through a HEPA filter back into the room rather than exhausting to the outside?

    Answer: Ductless (recirculating) fume hood

    Ductless (recirculating) fume hoods use activated carbon and/or HEPA filters to clean air and return it to the room, making them unsuitable for highly toxic or volatile chemicals.

  6. Before entering a confined space in a laboratory setting, what atmospheric condition must be verified first?

    Answer: Oxygen content between 19.5% and 23.5%

    OSHA 29 CFR 1910.146 requires that confined space oxygen levels be between 19.5% and 23.5% to ensure both adequate breathing air and absence of enriched-oxygen fire risk.

  7. What information is NOT required on a GHS label for a hazardous chemical?

    Answer: Chemical synthesis route

    GHS labels require pictograms, signal word, hazard statements, precautionary statements, product identifier, and supplier information, but not the synthesis route.