CCIL Laboratory Safety Protocols 4

Question 1

Which type of glove material provides the best resistance to concentrated sulfuric acid?

Accepted Answer

Neoprene or butyl rubber

Answer

Neoprene and butyl rubber offer superior resistance to strong mineral acids like concentrated sulfuric acid compared to latex, nitrile, or vinyl.

Question 2

What is the purpose of a Laboratory Chemical Hygiene Plan (CHP)?

Accepted Answer

To describe procedures, equipment, and work practices that protect workers from hazardous chemicals

Answer

A CHP is a written program required by OSHA's Lab Standard that outlines protective measures for handling hazardous chemicals.

Question 3

What does a purple or ultraviolet (UV) Biohazard warning label on a laboratory refrigerator indicate?

Accepted Answer

Biohazardous specimen or material storage

Answer

The universal biohazard symbol on refrigerators indicates the unit contains biological specimens or materials that may pose an infection risk.

Question 4

Which segregation rule applies to storing perchloric acid in a laboratory?

Accepted Answer

Store separately from all organic materials and reducing agents

Answer

Perchloric acid is a strong oxidizer that reacts violently with organic compounds and must be stored completely segregated from them.

Question 5

A laboratory safety inspection reveals that a sharps container is three-quarters full. The correct action is to:

Accepted Answer

Seal and replace the container immediately

Answer

Sharps containers should be sealed and replaced when they reach the fill line (typically 75% full) to prevent needlestick injuries.

CCIL - Canadian Council of Independent Laboratories Practice Test