#1
Which of the following is a primary consideration for laboratory safety?
Wearing appropriate personal protective equipment (PPE)
ExplanationPPE is crucial for minimizing exposure to hazards.
#2
What should be done if a laboratory worker accidentally spills a chemical on their skin?
Wash the affected area with water for at least 15 minutes
ExplanationImmediate washing minimizes chemical skin exposure.
#3
What does the term 'LD50' represent in toxicology?
The lethal dose that kills 50% of a test population
ExplanationLD50 measures the toxicity level of a substance.
#4
What is the primary function of a safety data sheet (SDS) in a laboratory?
Providing information on the hazards of chemical products
ExplanationSDSs offer crucial info on chemical hazards and safety.
#5
What is the purpose of a spill response plan in a laboratory?
To provide guidelines for cleaning up spills
ExplanationPlans outline safe and effective spill cleanup procedures.
#6
What does MSDS stand for in the context of laboratory safety?
Material Safety Data Sheet
ExplanationMSDS provides information on chemical hazards and precautions.
#7
In the laboratory, what is the primary purpose of an eyewash station?
Rinsing eyes in case of chemical exposure
ExplanationEyewash stations are for immediate treatment of eye contamination.
#8
Which of the following is an example of a biological hazard in a laboratory setting?
Mold cultures
ExplanationBiological hazards include molds due to potential infections.
#9
What is the purpose of a biosafety cabinet in a laboratory?
Protecting against biological aerosols
ExplanationBiosafety cabinets prevent exposure to biohazardous particles.
#10
Which type of fire extinguisher is suitable for use on electrical fires?
Class C
ExplanationClass C extinguishers are for electrical fires.
#11
What is the purpose of a spill kit in a laboratory?
To contain and clean up chemical spills
ExplanationSpill kits facilitate safe containment and cleanup.
#12
Which biohazard level is associated with agents that pose a moderate risk of infection and can cause serious diseases, but for which preventive or therapeutic interventions are often available?
Biohazard Level 2
ExplanationLevel 2 involves moderate-risk agents with available interventions.
#13
What is the primary purpose of a fume hood in a laboratory?
Ventilating and containing chemical fumes
ExplanationFume hoods protect by removing harmful airborne chemicals.
#14
In laboratory safety, what does the acronym PPE stand for?
Personal Protective Equipment
ExplanationPPE includes gear to safeguard against workplace hazards.
#15
What is the primary purpose of an emergency shower in a laboratory?
To rinse the body in case of chemical exposure
ExplanationEmergency showers provide rapid decontamination.
#16
Which of the following is a common safety practice when working with laboratory glassware?
Inspecting glassware for cracks or defects before use
ExplanationPre-use inspection prevents accidents from compromised glassware.
#17
What is the purpose of a biohazard label on a container in the laboratory?
To identify materials containing biological agents
ExplanationLabels warn of materials with potential biohazards.