Deck 12: Industrial Hygiene and Chemical Agents

Question 1

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

Answer 1

True

Question 2

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

Answer 2

False

Question 3

Exposure beyond TLVs is considered hazardous.

Answer 3

False

Question 4

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

Question 5

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

Question 6

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

Question 7

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

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 inhaling

Question 8

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

A) Inhalation
B) Ingestion
C) Absorption
D) Injection
E) Through the eyes

Question 9

Chronic effects of toxic substances involve a sudden dose of highly concentrated substance.

Question 10

Dose threshold the minimum dose required to produce irreversible damage.

Question 11

Canada announced a ban on asbestos in 1999.

Question 12

Lethal dose is the concentration in air that causes death to the test subject when inhaled.

Question 13

Ingestion, not a major concern in most industrial settings

Question 14

High efficiency respirators are an example of an engineering control for chemicals.

Question 15

What internal organ converts toxic substances to nontoxic substances?

A) Lungs
B) Liver
C) Kidneys
D) Bladder
E) Skin

Question 16

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

Question 17

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

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

Question 18

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

Question 19

All chemical agents are toxic substances.

Question 20

Toxic effects are a function of several factors except:

A) Route of entry
B) Time of day
C) Level of exposure
D) Amount of dose
E) Concentration

Question 21

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

A) Dust
B) Fume
C) Smoke
D) Mists
E) Aerosols

Question 22

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

A) Halogenated refrigerants
B) Carbon Monoxide
C) Carbon dioxide
D) Benzene
E) Ozone

Question 23

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

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

Question 24

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

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

Question 25

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

A) Dose threshold
B) Threshold limit value
C) Ceiling value
D) Lethal concentration
E) Lethal dose