CMLA REE CMLA Laboratory Safety & Procedures 3

Question 1

Which action is NOT acceptable when working in a laboratory with open flames?

Accepted Answer

Wearing loose-fitting synthetic clothing

Answer

Tying back long hair

Answer

Removing flammable solvents from the area

Answer

Using a flame-resistant lab coat

Question 2

An eyewash station must be activated and flushed for how long during an eye chemical exposure?

Accepted Answer

15–20 minutes

Answer

1–2 minutes

Answer

5 minutes

Answer

10 minutes

Question 3

What is the purpose of a biological safety cabinet (BSC) Class II Type A2?

Accepted Answer

Protects personnel, product, and the environment

Answer

Protects only the product from contamination

Answer

Provides chemical fume protection only

Answer

Protects personnel only, not the environment

Question 4

Which waste stream is used for blood-soaked materials and cultures of infectious agents?

Accepted Answer

Regulated medical/biohazardous waste (red bag)

Answer

Regular municipal waste

Answer

Recycling bin

Answer

Chemical waste container

Question 5

OSHA's Bloodborne Pathogen Standard requires that employers offer hepatitis B vaccination to at-risk employees:

Accepted Answer

Within 10 working days of initial assignment

Answer

Within 30 days of hire

Answer

After the first needlestick incident

Answer

Only if requested by the employee after 6 months

Question 6

When pipetting corrosive or infectious liquids, laboratory personnel must use:

Accepted Answer

Mechanical pipetting devices only

Answer

Mouth pipetting for precision

Answer

Any available pipette without restrictions

Answer

Pipettes rinsed with distilled water only

Question 7

A laboratory worker notices a gas odor near a Bunsen burner. The FIRST action should be to:

Accepted Answer

Turn off the gas supply and ventilate the area

Answer

Light the burner to burn off the gas

Answer

Continue working while investigating the source

Answer

Pour water on the burner area