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Laboratory Procedures & Safety Flashcards

7 cards from real NPS 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 Procedures & Safety flashcards as text

  1. What document provides detailed hazard, handling, and emergency information for a chemical?

    Answer: Safety Data Sheet (SDS)

    The SDS contains 16 standardized sections on hazards, handling, and emergency measures.

  2. When diluting a concentrated acid, what is the correct practice?

    Answer: Add acid slowly to water

    Adding acid slowly to water controls heat generation and reduces splattering.

  3. How many sections does a standard OSHA-aligned SDS contain?

    Answer: 16

    The GHS-aligned SDS format has 16 sections.

  4. Which GHS pictogram indicates a gas under pressure?

    Answer: Gas cylinder

    The gas cylinder pictogram denotes compressed, liquefied, or dissolved gases.

  5. Why should incompatible chemicals such as oxidizers and flammables be stored separately?

    Answer: Contact can cause fire or violent reaction

    Segregation prevents hazardous reactions if containers leak or break.

  6. Where should a chemical fume hood sash be positioned during work?

    Answer: At or below the marked working height

    Keeping the sash at the marked height maintains proper face velocity and protection.

  7. What should be done with unlabeled chemical containers found in the lab?

    Answer: Treat as unknown hazardous waste and notify safety personnel

    Unknowns must be handled as hazardous and reported for proper identification and disposal.

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