Question 1

All chemical agents are toxic substances.

Accepted Answer

A) True 
 B)False

Question 2

A sick building is one that makes people sick when it becomes infested with mold, mildew, spores, and other airborne micro-organisms.

Accepted Answer

A) True 
 B)False

Question 3

The oils in your skin provide adequate protection against most workplace chemicals.

Accepted Answer

A) True 
 B)False

Question 4

A toxic substance is one that has a negative effect on the health of a person.

Accepted Answer

A) True 
 B)False  True

Question 5

Class R respirators must be changed after each shift if oil-based contaminants are present.

Accepted Answer

A) True 
 B)False

Question 6

Asphyxiants are substances involving a sudden dose of highly concentrated substance.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following is associated with chronic effects/exposures of toxic substances?

Accepted Answer

A)   Sudden dose
B)   Severe
C)   Little or no awareness of exposures on the part of affected workers
D)   Cause immediate health problems
E)   Fainting immediately after inhalingF) A) and E)
G) A) and C)

Question 8

Which route of entry is of the greatest concern for health and safety professionals?

Accepted Answer

A)   Inhalation
B)   Ingestion
C)   Absorption
D)   Injection
E)   Through the eyesF) B) and E)
G) B) and C)

Question 9

The TLV-C of a given substance that should not be exceeded at any point during an exposure period.

Accepted Answer

A) True 
 B)False  False

Question 10

What internal organ converts toxic substances to nontoxic substances?

Accepted Answer

A)   Lungs
B)   Liver
C)   Kidneys
D)   Bladder
E)   SkinF) A) and D)
G) A) and C)

Question 11

Which of the following is used as a tracer gas when investigating indoor air quality concerns?

Accepted Answer

A)   Halogenated refrigerants
B)   Carbon Monoxide
C)   Carbon dioxide
D)   Benzene
E)   OzoneF) A) and B)
G) A) and C)

Question 12

Ingestion, not a major concern in most industrial settings

Accepted Answer

A) True 
 B)False

Question 13

When referring to threshold limit values, which of the following would represent the greatest concentration?

Accepted Answer

A)   Flash point
B)   Time-weighted average
C)   Ceiling
D)   Short-term exposure
E)   Biological exposure indicesF) A) and E)
G) C) and E)

Question 14

Toxic effects are a function of several factors except:

Accepted Answer

A)   Route of entry
B)   Time of day
C)   Level of exposure
D)   Amount of dose
E)   ConcentrationF) A) and B)
G) C) and D)

Question 15

What type of airborne contaminant is created when a metal is vapourized and then condensed after contact with cool air?

Accepted Answer

A)   Dust
B)   Fume
C)   Smoke
D)   Mists
E)   AerosolsF) B) and D)
G) B) and E)

Question 16

Dose threshold the minimum dose required to produce irreversible damage.

Accepted Answer

A) True 
 B)False

Question 17

Many chemical and toxic substances used in modern industry are flammable or combustible.

Accepted Answer

A) True 
 B)False

Question 18

Select the term that is best described by the following: The concentration in air that causes death to the test subject when inhaled.

Accepted Answer

A)   Dose threshold
B)   Threshold limit value
C)   Ceiling value
D)   Lethal concentration
E)   Lethal doseF) C) and D)
G) C) and E)

Question 19

Which of the following factors will have the greatest effect on the rate of absorption through the skin?

Accepted Answer

A)   Body fat
B)   Skin pigmentation
C)   Temperature
D)   Solubility
E)   Hair at the contact locationF) A) and B)
G) B) and E) D

Question 20

Controlling exposure to workers by limiting the time they spend in the contaminated environment is what type of control?

Accepted Answer

A)   At the worker
B)   Along the path
C)   Engineering control
D)   Personal protective equipment
E)   Administrative control.F) C) and D)
G) A) and C)

Exam 12: Industrial Hygiene and Chemical Agents

All chemical agents are toxic substances.

Correct AnswerverifiedShow Answer

A sick building is one that makes people sick when it becomes infested with mold, mildew, spores, and other airborne micro-organisms.

Correct AnswerverifiedShow Answer

The oils in your skin provide adequate protection against most workplace chemicals.

Correct AnswerverifiedShow Answer

A toxic substance is one that has a negative effect on the health of a person.

Correct AnswerverifiedTrue

Class R respirators must be changed after each shift if oil-based contaminants are present.

Correct AnswerverifiedShow Answer

Asphyxiants are substances involving a sudden dose of highly concentrated substance.

Correct AnswerverifiedShow Answer

Which of the following is associated with chronic effects/exposures of toxic substances?

Correct AnswerverifiedShow Answer

Which route of entry is of the greatest concern for health and safety professionals?

Correct AnswerverifiedShow Answer

The TLV-C of a given substance that should not be exceeded at any point during an exposure period.

Correct AnswerverifiedFalse

What internal organ converts toxic substances to nontoxic substances?

Correct AnswerverifiedShow Answer

Which of the following is used as a tracer gas when investigating indoor air quality concerns?

Correct AnswerverifiedShow Answer

Ingestion, not a major concern in most industrial settings

Correct AnswerverifiedShow Answer

When referring to threshold limit values, which of the following would represent the greatest concentration?

Correct AnswerverifiedShow Answer

Toxic effects are a function of several factors except:

Correct AnswerverifiedShow Answer

What type of airborne contaminant is created when a metal is vapourized and then condensed after contact with cool air?

Correct AnswerverifiedShow Answer

Dose threshold the minimum dose required to produce irreversible damage.

Correct AnswerverifiedShow Answer

Many chemical and toxic substances used in modern industry are flammable or combustible.

Correct AnswerverifiedShow Answer

Select the term that is best described by the following: The concentration in air that causes death to the test subject when inhaled.

Correct AnswerverifiedShow Answer

Which of the following factors will have the greatest effect on the rate of absorption through the skin?

Correct AnswerverifiedD

Controlling exposure to workers by limiting the time they spend in the contaminated environment is what type of control?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified