WHMIS Quiz

Explanation
Blood samples that have been contaminated by Hepatitis B viruses should be tagged with the symbol "biohazard" or "biohazardous material" because these symbols indicate the presence of a biological hazard or potential danger to human health. The Hepatitis B virus is a bloodborne pathogen that can cause serious liver infection and is highly contagious. Therefore, labeling the contaminated blood samples with the biohazard symbol helps to ensure proper handling, disposal, and protection of individuals who come into contact with the samples.

Explanation
The term "compressed gas" refers to a gas that has been compressed to occupy a smaller volume. When a gas is compressed, the pressure inside the cylinder increases. Similarly, "pressurized gas" refers to a gas that is under pressure. Both terms indicate that the gas inside the cylinder is at a high pressure. If the cylinder is subjected to heating or dropping, it can cause an increase in pressure beyond the safe limits, leading to an explosion. Therefore, both "compressed gas" and "pressurized gas" are correct answers to explain the potential danger of explosions in these cylinders.

Explanation
This symbol should be present on the label of industrial cleaners containing sodium hydroxide because sodium hydroxide is a highly corrosive base. The symbol represents the potential danger of the substance causing corrosion, which can result in damage to surfaces, materials, and even skin upon contact. It serves as a warning to users to handle the product with caution and take necessary safety measures to avoid any harm or damage.

Explanation
The correct answer is "flammable" or "flammable material" because both aerosol cans with easily ignitable propellants and a bottle of methanol pose a fire hazard. The presence of this symbol on their labels serves as a warning to users about the potential flammability of these substances.

Explanation
Oxidizing refers to a process or substance that releases oxygen. When an oxidizing material is present, it can react with other substances and provide oxygen to support combustion. This means that if a flammable material is exposed to an oxidizing material, it can burn more easily as it has an additional source of oxygen to fuel the fire.

Explanation
The material described in the statement is labeled as "poisonous" because it can cause harm if swallowed, inhaled, or absorbed through the skin. Additionally, the statement suggests that the effects of the material are immediate, indicating that it can cause immediate harm or even death upon contact or ingestion.

Explanation
Chemicals that are reactive or classified as reactive materials can undergo a dangerous reaction when they come into contact with water. This means that these chemicals have the potential to react violently, release toxic gases, or even cause explosions when exposed to water. It is important to handle and store reactive materials with caution to prevent accidents or harm.

Explanation
Chemicals in this division are classified as toxic because they can cause harmful effects, such as birth defects in children or liver damage. The term "toxic material" is used to further emphasize the potential harm these chemicals can cause. Additionally, the phrase "toxic with long term effects" indicates that prolonged and repeated exposure to these chemicals can lead to the development of cancer.