Chapter 1 - Histotechnology Self-Assessment Workbook, 5th Edition

Silver nitrate falls into which of the following hazard classifications?

mechanical

biological

chemical

fire

chemical

Which of the following chemicals is both toxic and flammable?

chloroform

xylene

mercury

hydrochloric acid

xylene is toxic and flammable.

chloroform is toxic.

mercury is toxic.

hydrochloric acid is corrosive.

Formaldehyde is considered a:

possible carcinogen

strong oxidizer

flammable liquid

weak acid

possible carcinogen

Which of the following is an explosive compound that should not be stored in the laboratory?

mercuric chloride

anhydrous picric acid

glacial acetic acid

chloroform

anhydrous picric acid

A type A fire extinguisher should be used on fires involving what?

paper or wood

Which of the following is concerned with human immunodeficiency virus (HIV) and hepatitis B virus (HBV)?

Laboratory Standard

Hazard Communication Standard

Formaldehyde Standard

Bloodborne Pathogen Standard

Bloodborne Pathogen Standard

Which of the following may be disposed of in the sanitary sewer system according to Environmental Protection Agency (EPA) and Centers for Disease Control and Prevention (CDC) guidelines?

silver nitrate

absolute alcohol

pulverized tissue

blood

blood

In a hazard communication program, records of employee training must be kept for how long?

duration of employment plus 30 years

The Formaldehyde Standard mandates a time-weighted average (TWA) exposure limit of how much?

0.75 ppm (parts per million)

Following monitoring, the TWA of formaldehyde is found to be 0.60 ppm. This means that:

no further monitoring needs to be done

monitoring must be repeated in 30 days

a medical surveillance program must be established

any action depends on the short-term exposure limit (STEL)

a medical surveillance program must be established

Which of the following types of extinguishers should be used on a fire involving electric equipment?

A
B
C
D

C

Which of the following types of extinguishers should be used on a fire involving xylene?

A
B
C
D

B

Development of a chemical hygiene plan is mandated under which of the following?

Laboratory Standard

Hazard Communication Standard

Formaldehyde Standard

Bloodborne Pathogen Standard

Laboratory Standard

Monitoring of formaldehyde exposure shows the STEL to be 2.0ppm. This means that:

no further monitoring needs to be done

monitoring must be repeated in 30 days

a medical surveillance program must be established

any action depends on the TWA and action level

any action depends on the TWA and action level

The amount of a chemical substance that when ingested is expected to cause the death of half of an experimental animal population is known as the what?

LD₅₀

Concentrated hydrochloric acid may NOT be disposed of in the sanitary sewer because it is classified as:

carcinogenic

oxidizing

corrosive

flammable

corrosive

Isopentane is a very hazardous chemical because it has:

a corrosive nature

to be handled as an oxidizer

been classified as a carcinogen

a flashpoint <0^oC

a flashpoint <0^oC

(isopentane has a flashpoint of <-51^oC)

Hydrochloric acid (HCl; ~6N) has been splashed on a small area of the left arm of a laboratory worker. The most appropriate action is to do what? What should they never do?

Wash the arm for 10 minutes with cold water and soap, then seek medical attention.

NEVER neutralize an acid or a base while it is on someone’s skin.

6N HCl has been spilled on the right hand. The first action should be to:

neutralize the acid with a base

wash hand with copious amounts of water

seek medical attention

call for a spill kit

ash hand with copious amounts of water

(NEVER neutralize the acid with a base, or vice versa, while it is on someone’s skin)

When used in a National Fire Protection Association (NFPA) diamond, which of the following numbers indicates a minor hazard?

1

2

3

4

1 indicates a minor hazard

(0 indicates no hazard)

The left blue diamond in the NFPA chemical hazard label provides information on which of the following?

flammability

reactivity

special warnings

health hazards

health hazards

The top red diamond in the NFPA chemical hazard label provides information on which of the following?

flammability

reactivity

special warnings

health hazards

flammability

The right yellow diamond in the NFPA chemical hazard label provides information on which of the following?

flammability

reactivity

special warnings

health hazards

reactivity

Which of the following describe prions?

viruses

fungi

protozoa

abnormal proteins

abnormal proteins

The revised Hazard Communication Standard requirements for labels of chemicals will now require all of the following EXCEPT:

pictogram

signal word

disposal requirements

hazard statement

disposal requirements

Which of the following is NOT a required pictogram?

skull and crossbones

flame

environment

exclamation mark

environment

How many pictograms are required for labeling under the revised Hazard Communication Standard?

8 pictograms are required.

(there are 9 total, but only 8 are required)

According to the universal precautions, specimen containers must be labeled with a biohazard warning label if they contain potentially infectious material. True or False?

True

Specimens may be returned to the patient without any risk to the patient. True or False?

False

Cryogenic sprays pose little risk when used to freeze tissue in a cryostat. True or False?

False

All infectious waste should be placed in biohazard containers. True or False?

True

Ergonomics associates cumulative trauma disorders with the working environment. True or False?

True

A safety data sheet on each chemical used in the laboratory must be available to all employees. True or False?

True

The PEL for an 8-hour shift for formaldehyde is 0.5 ppm. True or False?

False

(actually 0.75 ppm for formaldehyde)

Class D fires are of marked concern in histopathology. True or False?

False

Some automatic halon extinguishers cannot be used in areas in which employees would be expected to remain after discharge of the extinguishing agent. True or False?

True

The volume of liquid stored in a flammable storage cabinet is unregulated. True or False?

False

Hydrated picric acid poses less hazard than anhydrous picric acid. True or False?

True

Acids should be diluted by pouring the concentrated acid into water. True or False?

True

(NEVER pour water into acid to dilute; always pour acid into water to dilute)

Reactions as severe as anaphylaxis have been noted due to the increased use of vinyl gloves. True or False?

False

(actually latex is what has caused this, not vinyl)

Prions are sensitive to formaldehyde fixation. True or False?

False

(prions are resistant and should never be seen in a standard histopathology lab)

Because of a dramatic increase in tuberculosis in health care settings, a documented tuberculosis exposure control plan should be in place. True or False?

True

Signal words are used on labels to indicate relative level of severity of a hazard. True or False?

True

The pictogram indicating a skin sensitizer is an exclamation point. True or False?

True

Choose the correct hazard(s) for: frozen section

flammable

radioactive

biological

poison

carcinogenic

biological

Choose the correct hazard(s) for: ethyl alcohol

flammable

radioactive

biological

poison

carcinogenic

flammable, poison

Choose the correct hazard(s) for: mercuric chloride

flammable

radioactive

biological

poison

carcinogenic

poison

Choose the correct hazard(s) for: gross dissection

flammable

radioactive

biological

poison

carcinogenic

biological

Choose the correct hazard(s) for: isopentane

flammable

radioactive

biological

poison

carcinogenic

flammable

Choose the correct hazard(s) for: 10% formalin

flammable

radioactive

biological

poison

carcinogenic

poison, carcinogenic

Choose the correct hazard(s) for: radiology

flammable

radioactive

biological

poison

carcinogenic

radioactive

Choose the correct hazard(s) for: chromic acid

flammable

radioactive

biological

poison

carcinogenic

poison, carcinogenic

Choose the correct hazard(s) for: toluene

flammable

radioactive

biological

poison

carcinogenic

flammable, poison

Choose the correct hazard(s) for: acetone

flammable

radioactive

biological

poison

carcinogenic

flammable

Choose the correct hazard(s) for: chloroform

flammable

radioactive

biological

poison

carcinogenic

carcinogenic

Choose the correct hazard(s) for: glutaraldehyde

flammable

radioactive

biological

poison

carcinogenic

poison

Choose the correct hazard(s) for: pararosaniline

flammable

radioactive

biological

poison

carcinogenic

carcinogenic

Choose the correct hazard(s) for: methanol

flammable

radioactive

biological

poison

carcinogenic

flammable, poison

Choose the correct hazard(s) for: autopsy area

flammable

radioactive

biological

poison

carcinogenic

biological

Choose the correct hazard(s) for: osmium tetroxide

flammable

radioactive

biological

poison

carcinogenic

poison

Choose the correct hazard(s) for: cryostat

flammable

radioactive

biological

poison

carcinogenic

biological

Choose the correct hazard(s) for: blood serum

flammable

radioactive

biological

poison

carcinogenic

biological

What is the most appropriate pictogram symbol for: hydrochloric acid

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

corrosion

(indicates a corrosive substance)

What is the most appropriate pictogram symbol for: latex

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

exclamation mark

(indicates an irritant)

What is the most appropriate pictogram symbol for: absolute alcohol

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

flame

(indicates a flammable substance)

What is the most appropriate pictogram symbol for: potassium permanganate

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

flame over circle

(indicates an oxidizer)

What is the most appropriate pictogram symbol for: mercuric chloride

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

skull and crossbones

(indicates poisonous substance)

What is the most appropriate pictogram symbol for: anhydrous picric acid

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

exploding bomb

(indicates an explosion hazard)

What is the most appropriate pictogram symbol for: liquid nitrogen

flame

exclamation mark

exploding bomb

corrosion

gas cylinder

flame over circle

skull and crossbones

gas cylinder

(indicates a gas under pressure in a cylinder)