lab safety

Which type of fire extinguisher should be used for an electrical fire in the lab?

A. Water

B. Foam

C. CO₂

D. Dry powder

C

What is the proper way to store flammable chemicals in the lab?

A. On a high shelf near the ceiling

B. In a ventilated, fire-resistant cabinet

C. Next to heat sources

D. In the same cabinet as acids

B

Which of the following is a biological hazard in the lab?

A. Blood samples from patients

B. Gloves

C. Test tubes

D. Paper towels

A

A laboratory worker cuts their hand on broken glass. What should they do first?

A. Rinse the wound under running water

B. Cover the wound and continue working

C. Ignore it

D. Apply gloves over the wound

A

When using a biosafety cabinet (BSC), which practice is correct?

A. Work with the sash fully open

B. Place hands and arms inside only after the cabinet has been turned on

C. Block the airflow with equipment

D. Lean into the cabinet while working

B

When handling infectious materials, the most important practice to prevent contamination is:

A. Eating in the lab

B. Proper hand hygiene

C. Wearing sandals

D. Leaving samples uncovered

B

Chemical labels must include all the following except:

A. Chemical name

B. Hazard warnings

C. Expiration date

D. Employee phone number

D

A broken glass tube in the lab should be cleaned up using :

A. Bare hands

B. Paper towels

C. Broom and dustpan or tongs

D. Throwing it in the trash directly

C

What is the first action a lab worker should take if a chemical spill occurs?

A. Continue working

B. Wash hands only

C. Evacuate the area and follow spill procedure

D. Report to supervisor later

C

Which of the following Personal Protective Equipment (PPE) is required when handling blood specimens?

A. Gloves

B. Safety goggles

C. Lab coat

D. Flip-flops

ABC

Sharps containers in the lab must be:

A. Overfilled for convenience

B. Puncture-resistant and leak-proof

C. Placed anywhere in the lab

D. Reusable without disposal

B

What should a lab worker do after removing gloves?

A. Dispose gloves and wash hands thoroughly

B. Shake hands with a coworker

C. Put gloves back on immediately

D. Touch face with gloves

A