Practice Test 2 - Safe Work Practices Flashcards
A skin cut is an example of which link in the chain of infection
a) Mode of Transmission
b) Portal of Entry
c) Reservoir
d) Susceptible Host
b) Portal of Entry
The portal of entry is the method a pathogen uses to enter a susceptible host.
Examples include the respiratory tract, blood, mucous membranes, and broken skin
Which of these chemicals is explosive?
a) Crystal violet
b) Picric acid
c) Potassium chloride
d) Sodium hydroxide
b) Picric acid
Picric acid can form explosive salts if it becomes contaminated with metal ions.
or if it dries out and crystalizes.
Furthermore, picric acid is a powerful explosive when dry.
CO2 fire extinguishers are effective against which type of fire?
a) Flammable gas
b) Flammable liquid
c) Paper
d) Wood
b) Flammable liquid
CO2 fire extinguisher are best at extinguishing fires involving flammable liquids and electricity. They are less effective at extinguishing fires involving solid materials, such as paper, wood, and metals. This is because these types of fires require a cooling agent to extinguish the fire, whereas a CO2 fire extinguisher works by displacing oxygen instead of cooling. Therefore a wood fire extinguished by a CO2 fire extinguisher might rekindle if the paper is still hot.
What is the first step when using a fire extinguisher?
a) Aim the fire extinguisher at the fire
b) Pull the pin
c) Squeeze the handle
d) Sweep the hose from side to side at the base of the fire
b) Pull the pin
Remember the steps to use a firee extinguisher with the mnemonic ‘PASS’.
PASS stands for Pull (the pin to break the tamper seal),
Aim (the nozzle at the base of the fire),
Squeeze (the handle to release the extinguishing agent), and
Sweep (from side to side at the base of the fire until the fire is out)
This fire extinguisher below can be used on which of the following fires?
a) Electrical equipment
b) Methanol
c) Oil bath
d) Cardboard boxes
d) Cardboard boxes
Water fire extinguishers can only be used ono fires involving combustibles (wood, carrd, paper and textiles)
What does the acronym RACE mean in the context of fire procedures?
a) Ready, Aim, Check, Extinguish
b) Recover, Act, Control, Escape/Evacuate
c) Rescue, Alarm, Confine, Extinguish/Evacuate
d) Run, Activate, Coordinate, Escape/Extinguish
c) Rescue, Alarm, Confine, Extinguish/Evacuate
Refers to the sites to follow in the event of a fire emergency.
RESCUE anyone in immediate danger
Activate the fire ALARM
CONFINE the fire by closing doors and windows
EXTINGUISH the fire w/ extinguisher or EVACUATE the building if the fire is too dangerous
A fire extinguisher has the following symbol:
The fire extinguisher:
a) can be used to extinguish electrical fires
b) carries a risk of electrical shock
c) requires charging before use
d) should not be used on live electrical equipment
a) can be used to extinguish electrical fires
The electricity symbol on a fire extinguisher means the extinguisher is suitable for putting out electrical fires
What is the term for a chemical that immediately damages human tissue on contact?
a) Carcinogenic
b) Combustible
c) Corrosive
d) Toxic
c) Corrosive
You accidentally breathe in picric acid. After moving outside to fresh air, what should be your next step?
a) Ask someone to perform artificial respiration
b) Drink several glasses of water
c) Self-induce vomiting
d) Take several deep breaths
d) Take several deep breaths
The next appropriate action would be to take several deep breaths to ensure that you get enough fresh air to help clear the chemical from your lungs
Artificial respiration should only be used on people who cannot breathe on their own
Which of these chemicals is highly toxic?
a) 10% ethanol
b) Hydrocortisone
c) N-hexane
d) Phenol
d) Phenol
In its pure state, phenol is a toxic and potentially deadly substance
What does mixing bleach with ammonia create?
a) Chloramine
b) Chlorine gas
c) Chloroform
d) Peroxyacetic acid
a) Chloramine
Adding ammonia to bleach creates chlorarmine, a toxic gas
The three main types of ionizing radiation are alpha, beta and:
a) delta
b) gamma
c) lambda
d) zeta
b) gamma
In second-degree burns:
a) the damage extends to the dermis and blisters may be apparent
b) the damage extends to the subcutaneous layer and there is significant fluid loss
c) the damage is only superficial and can be treated with moisturizer
d) the risk of death is high and immediate medical help is needed
a) the damage extends to the dermis and blisters may be apparent
Universal precautions apply to which type of hazard?
a) Bloodborne pathogens
b) Dangerous chemicals
c) Environmental hazards
d) Radiation
a) Bloodborne pathogens
Universal precautions are a standard set of guidelines to prevent the transmission of bloodborne pathogens
Gases under pressure require a pictogram of:
a) a flame
b) a flame over a circle
c) a gas cylinder
d) an exploding test tube
c) a gas cylinder
Is an image of a gas cylinder in a red diamond.
It means that the chemical is a gas under pressure and cudl release large amounts of gas into the workplace air very quickly.
The flame pictogram is for flammable chemicals
The flame over circle pictogram for oxidizers
