FREE CMLA Laboratory Safety & Procedures Questions and Answers

Question 1

On the NFPA hazard diamond, which color represents flammability?

Accepted Answer

Red

Answer

Blue

Answer

Yellow

Answer

White

Question 2

What is the primary purpose of a laboratory fume hood?

Accepted Answer

Contain and exhaust harmful fumes

Answer

Sterilize equipment

Answer

Provide extra lighting

Answer

Store chemicals

Question 3

If a chemical splashes into your eyes, how long should you flush them at the eyewash station?

Accepted Answer

15 minutes

Answer

5 seconds

Answer

30 seconds

Answer

2 minutes

Question 4

Which personal protective equipment (PPE) is essential when handling biohazard materials?

Accepted Answer

Gloves and lab coat

Answer

Safety sandals

Answer

Hearing protection

Answer

Dust mask

Question 5

Before disposing of used sharps, they must be:

Accepted Answer

Placed in a puncture‑resistant sharps container

Answer

Wrapped in paper

Answer

Incinerated immediately

Answer

Emptied into regular trash

Question 6

The safety shower should ideally be reached within how many seconds after a chemical spill on the body?

Accepted Answer

10 seconds

Answer

30 seconds

Answer

1 minute

Answer

5 minutes

Question 7

The GHS pictogram showing a test tube pouring onto a hand and metal indicates:

Accepted Answer

Corrosive

Answer

Flammable

Answer

Toxic

Answer

Oxidizer

Question 8

When heating a liquid in a test tube, you should always:

Accepted Answer

Point the opening away from people

Answer

Cap the tube tightly

Answer

Point the opening toward yourself

Answer

Fill the tube to the brim

Question 9

What is the first action you should take when a minor chemical spill occurs?

Accepted Answer

Alert others and don PPE

Answer

Leave the lab immediately

Answer

Mop it up with paper towels

Answer

Ignore it if small