HAZWOPER Chemical Hazards & Toxicology 2

Question 1

Which type of chemical exposure effect appears immediately or very soon after a single dose or short-term exposure?

Accepted Answer

Acute effect

Answer

Chronic effect

Answer

Cumulative effect

Answer

Latent effect

Question 2

A HAZWOPER site worker is exposed to a chemical with a TLV-TWA of 50 ppm. This value represents a safe exposure limit averaged over what time period?

Accepted Answer

8 hours

Answer

15 minutes

Answer

1 hour

Answer

40 hours

Question 3

Which chemical property describes the minimum temperature at which a liquid produces sufficient vapor to ignite in the presence of an ignition source?

Accepted Answer

Flash point

Answer

Boiling point

Answer

Autoignition temperature

Answer

Vapor density

Question 4

When instructing on chemical mixtures at HAZWOPER sites, which concept describes the combined effect of two chemicals being greater than the sum of their individual effects?

Accepted Answer

Synergism

Answer

Antagonism

Answer

Additive effect

Answer

Potentiation

Question 5

A Safety Data Sheet (SDS) Section 11 provides which type of information critical to HAZWOPER toxicological training?

Accepted Answer

Toxicological information

Answer

Physical and chemical properties

Answer

First aid measures

Answer

Exposure controls and PPE

Question 6

Which federal agency publishes Permissible Exposure Limits (PELs) that are legally enforceable in the workplace?

Accepted Answer

OSHA

Answer

NIOSH

Answer

EPA

Answer

ACGIH

Question 7

What term describes a chemical that causes damage specifically to the nervous system, requiring special instructor emphasis in HAZWOPER neurotoxin training?

Accepted Answer

Neurotoxin

Answer

Hepatotoxin

Answer

Nephrotoxin

Answer

Pneumotoxin