Laboratory Science Lab Safety and Equipment

Question 1

What class of fire extinguisher is appropriate for a chemical laboratory fire involving flammable liquids?

Accepted Answer

Class B

Answer

Class B extinguishers are designed for flammable liquid fires, which are common in chemical laboratories.

Question 2

Which type of personal protective equipment (PPE) is required when handling concentrated acids?

Accepted Answer

Chemical splash goggles and acid-resistant gloves

Answer

Concentrated acids require both chemical splash goggles and acid-resistant gloves to protect eyes and skin from severe burns.

Question 3

What is the correct procedure when a chemical spill occurs on the skin?

Accepted Answer

Flush with large amounts of water for at least 15 minutes

Answer

Immediate and prolonged flushing with water for at least 15 minutes dilutes and removes the chemical, minimizing tissue damage.

Question 4

Which biosafety level (BSL) is required for working with agents that pose a moderate risk to personnel but low risk to the community?

Accepted Answer

BSL-2

Answer

BSL-2 is used for work with agents of moderate potential hazard to personnel and the environment, such as Hepatitis B virus.

Question 5

What is the purpose of a fume hood in a laboratory?

Accepted Answer

To contain and exhaust hazardous vapors away from lab personnel

Answer

Fume hoods use exhaust ventilation to capture and remove hazardous chemical vapors, protecting laboratory workers from inhalation exposure.

Laboratory Science Practice Test