NSC Chemical Safety 2

Question 1

What does the NFPA 704 diamond's blue quadrant indicate?

Accepted Answer

Health hazard

Answer

The blue (left) quadrant of the NFPA 704 diamond indicates health hazard on a scale of 0 to 4.

Question 2

Which type of fire extinguisher is appropriate for a flammable liquid fire?

Accepted Answer

Class B

Answer

Class B fire extinguishers are designed for flammable liquid fires such as gasoline, oil, and solvents.

Question 3

What is the primary purpose of secondary containment in chemical storage areas?

Accepted Answer

To prevent spills from reaching the environment

Answer

Secondary containment captures leaks or spills before they can spread and contaminate the surrounding environment or drain systems.

Question 4

When diluting concentrated sulfuric acid with water, the correct procedure is to:

Accepted Answer

Add acid to water slowly

Answer

Acid should always be added slowly to water (never the reverse) to prevent the violent exothermic reaction from spattering concentrated acid.

Question 5

Which federal regulation requires chemical manufacturers to provide Safety Data Sheets (SDS) to employers?

Accepted Answer

OSHA Hazard Communication Standard (HazCom)

Answer

OSHA's Hazard Communication Standard (29 CFR 1910.1200) requires chemical manufacturers and importers to provide SDS for hazardous chemicals.

NSC Practice Test