HAZWOPER 40 - Lesson 3 – Toxicology Exam
Questions & Answers (Verified
100% Correct)
Chemicals in combination can produce different biological
responses than the responses seen when exposure is to
one chemical alone.
True
False - ANSWER -True
________ is the most common route of exposure leading to
a toxic dose in the work environment
Injection
Ingestion
, Inhalation
Eye/Skin contact - ANSWER -
LD 50 of 25 mg/m3 means that a concentration of 25
mg/m3 of a certain substance indicates:
50 people out of a group of 80 exposed to a concentration
25 mg/m3 of a substance were shown to have experienced
a fatal dose.
50% of the concentration of a substance cause fatality in
those be exposed.
A concentration of 25 mg/m3 of a substance is shown to
have been fatal to 50 percent of a test group of animals.
LD 50 is a fictitious term and does not indicate anything. -
ANSWER -A concentration of 25 mg/m3 of a substance is
shown to have been fatal to 50 percent of a test group of
animals.
Questions & Answers (Verified
100% Correct)
Chemicals in combination can produce different biological
responses than the responses seen when exposure is to
one chemical alone.
True
False - ANSWER -True
________ is the most common route of exposure leading to
a toxic dose in the work environment
Injection
Ingestion
, Inhalation
Eye/Skin contact - ANSWER -
LD 50 of 25 mg/m3 means that a concentration of 25
mg/m3 of a certain substance indicates:
50 people out of a group of 80 exposed to a concentration
25 mg/m3 of a substance were shown to have experienced
a fatal dose.
50% of the concentration of a substance cause fatality in
those be exposed.
A concentration of 25 mg/m3 of a substance is shown to
have been fatal to 50 percent of a test group of animals.
LD 50 is a fictitious term and does not indicate anything. -
ANSWER -A concentration of 25 mg/m3 of a substance is
shown to have been fatal to 50 percent of a test group of
animals.
