Question 1

Sarah has poured a hazardous cleaning chemical into her personal smaller and easier-to-use spray bottle. Sarah has poured only enough to use for the task at hand. Sarah is required to put a workplace label on her spray bottle.

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Question 2

The best method for mitigating the risks associated with chemical and biohazards is substitution.

Accepted Answer

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Question 3

Supplier labels must include initial supplier information.

Accepted Answer

Supplier labels are required to include initial supplier information to ensure traceability and accountability of the product's origin and compliance with regulations.

Question 4

Flashpoint is the highest temperature at which a liquid gas gives off enough vapour to form an ignitable mixture with air and produce a flame with a source of ignition.

Accepted Answer

Flashpoint is the lowest temperature at which a liquid can form an ignitable mixture with air and produce a flame when exposed to a source of ignition.

Question 5

Custodial staff (also known as janitors or cleaners) are the unsung heroes of the workplace. Going about their work while many of us are in bed, they deal with a whole host of situations that bring them into contact with a wide range of chemical and biological agents. They are exposed to residues left in the air and on surfaces from manufacturing processes, from service operations, and from human excretions (sweat, body oils, from sneezing, and so on). While employees of the firms that they service receive training about specific chemical and biological hazards, the custodial staff are often unaware of some of the hazards that they may encounter.
-Custodial staff may be at more risk of acquiring an illness/injury from acute, rather than ambient, exposure to a chemical or biological agent. How would the cleaning manager know if it was an acute exposure?

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Custodial staff (also known as janitors or...

Question 6

A chemical's ability to pass through the skin is closely associated with toxicity.

Accepted Answer

A chemical's ability to penetrate the skin can increase its potential to cause harm, as it can enter the bloodstream and affect internal organs, thus contributing to its overall toxicity.

Question 7

Differentiate between chemical and biological agents. Identify a biological or chemical agent present in your workplace or in a workplace with which you are familiar (either by knowing someone who works there or by being a customer/patient). Explain the route of entry, type(s) of toxicity involved, and the health effects that this specific agent can have on the human body. Describe the controls that should be put in place to control this hazard.

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Question 8

Hazards identified within WHMIS are organized by group and class.

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Question 9

Custodial staff (also known as janitors or cleaners) are the unsung heroes of the workplace. Going about their work while many of us are in bed, they deal with a whole host of situations that bring them into contact with a wide range of chemical and biological agents. They are exposed to residues left in the air and on surfaces from manufacturing processes, from service operations, and from human excretions (sweat, body oils, from sneezing, and so on). While employees of the firms that they service receive training about specific chemical and biological hazards, the custodial staff are often unaware of some of the hazards that they may encounter.
-Custodial staff are exposed to aerosols through the cleaning products they use and as a by-product of mechanical and human activity at each workplace where they clean. What is the part of the respiratory system that is spiral shaped and could be protected from aerosols by wearing a face mask?

Accepted Answer

The turbinates are spiral-shaped structures in the nasal cavity that help filter and humidify the air we breathe. Wearing a face mask can help protect them from aerosols.

Question 10

A human is an example of a reservoir.

Accepted Answer

A human can act as a reservoir for pathogens, harboring them without showing symptoms and potentially spreading them to others.

Question 11

An SDS must contain information about composition and ingredients.

Accepted Answer

An SDS (Safety Data Sheet) is required to include information about the chemical composition and ingredients to ensure safe handling and use.

Question 12

The ingestion of chemicals or biohazards is often the result of poor hygiene.

Accepted Answer

Poor hygiene can lead to the accidental ingestion of harmful substances due to inadequate handwashing or improper handling of food and materials.

Question 13

Custodial staff (also known as janitors or cleaners) are the unsung heroes of the workplace. Going about their work while many of us are in bed, they deal with a whole host of situations that bring them into contact with a wide range of chemical and biological agents. They are exposed to residues left in the air and on surfaces from manufacturing processes, from service operations, and from human excretions (sweat, body oils, from sneezing, and so on). While employees of the firms that they service receive training about specific chemical and biological hazards, the custodial staff are often unaware of some of the hazards that they may encounter.
-The owner of the cleaning company tries to protect his workers by getting as much information as he can about chemical hazards when meeting with new clients and renewing contracts with existing clients. In general, for what percentage of chemicals will he be provided with toxicity data?

Accepted Answer

Typically, toxicity data is available for about 20% of chemicals, as many chemicals in use have not been thoroughly tested for their toxicological effects.

Question 14

List the eight general characteristics and properties that make solvents effective. Pick two of the eight and explain how that characteristic/property would make a solvent hazardous.

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Question 15

Custodial staff (also known as janitors or cleaners) are the unsung heroes of the workplace. Going about their work while many of us are in bed, they deal with a whole host of situations that bring them into contact with a wide range of chemical and biological agents. They are exposed to residues left in the air and on surfaces from manufacturing processes, from service operations, and from human excretions (sweat, body oils, from sneezing, and so on). While employees of the firms that they service receive training about specific chemical and biological hazards, the custodial staff are often unaware of some of the hazards that they may encounter.
- What characteristic of chlorinated solvents could ultimately result in liver problems from cleaners?

Accepted Answer

Chlorinated solvents are fat-soluble, which allows them to accumulate in the liver and potentially cause liver damage over time.

Question 16

Chris's restaurant in Halifax, Nova Scotia has just received a substandard evaluation from the Ministry of Agriculture's restaurant inspector. The report cited the following problems: dirty conditions in the kitchen, leaking refrigeration units, unclean restrooms, cross-contamination (e.g. cutting raw meat and vegetables without cleaning or replacing the cutting board/knife), and inadequate ventilation in the kitchen. There have been a number of cases of food poisoning in the past six months (staff and customers). The restaurant's negative rating has been posted on an online website available to current and potential customers, so Chris wants to get the problems fixed as soon as possible and have the notice removed. For each problem, identify the form and type of chemical and/or biological hazard involved. Discuss what controls Chris should put in place so that next time around the restaurant will receive a much more positive rating from the inspectors, making special note of new hazards that might arise while he is fixing the problems.

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Question 17

Norma has been exposed to lead from the plumbing that supplies the drinking water in her workplace, consequently Norma is at risk of developing kidney disease.

Accepted Answer

Lead exposure is known to cause kidney damage and increase the risk of kidney disease over time.

Question 18

List the seven types of chemical contaminants found in workplaces. Describe an example of one chemical hazard that office workers may be exposed to and one example of a chemical hazard that manufacturing workers may be exposed to. Describe a workplace human resource practice or policy that could address each of these health and safety issues.

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Question 19

Recalling the 12 toxic substances, what three would be the most likely to result in adverse health effects for firefighters?

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Quiz 6: Biological and Chemical Agents