NCDCC HAZMAT Theory Assessment
Questions and Answers
- 1.
Besides flammable and non-flammable gases, what is the other sub-division of Class 2 – Gases?
- A.
Liquefied Gases
- B.
Poisonous Gases
- C.
Cryogenic Gases
- D.
Compressed Gases
Correct Answer
B. Poisonous GasesExplanation
The other sub-division of Class 2 - Gases is Poisonous Gases. This category includes gases that are toxic and can cause harm or even death if inhaled or exposed to in high concentrations. These gases may have different effects on the human body, such as respiratory irritation, suffocation, or systemic toxicity. It is important to handle and transport poisonous gases with caution to prevent any accidents or harm to human health.Rate this question:
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- 2.
Which of the following is Class 1 hazard?
- A.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- B.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- C.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- D.
![NCDCC HAZMAT Theory Assessment - Quiz]()
Correct Answer
C.Explanation
A Class 1 hazard refers to a situation that poses a high risk of harm or danger to individuals. It is the most severe category of hazard. This means that it has the potential to cause serious injuries, illnesses, or even fatalities. Class 1 hazards require immediate attention and appropriate measures to mitigate the risk and ensure the safety of individuals.Rate this question:
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- 3.
How many classes of HazMat are there according to the UN Classification of HazMat?
- A.
5
- B.
6
- C.
8
- D.
9
Correct Answer
D. 9Explanation
There are 9 classes of HazMat according to the UN Classification of HazMat.Rate this question:
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- 4.
Which of the followings HazMat Classes would explode or burn fiercely when mixed with ordinary combustibles?
- A.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- B.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- C.
![NCDCC HAZMAT Theory Assessment - Quiz]()
- D.
![NCDCC HAZMAT Theory Assessment - Quiz]()
Correct Answer
C.Explanation
HazMat Class 4 materials are flammable solids that can explode or burn fiercely when mixed with ordinary combustibles. These materials have the potential to ignite and sustain a fire when exposed to heat, sparks, or open flames. They can pose a significant risk to safety and property if not handled and stored properly.Rate this question:
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- 5.
Which of the following are possible hazards of Class 3- Liquids?
- A.
Radiation sickness
- B.
Metal dust
- C.
Flowing fire
- D.
Injuries due to projectiles
Correct Answer
C. Flowing fireExplanation
Class 3 liquids are flammable liquids, which means they can easily catch fire and sustain combustion. The term "flowing fire" refers to the potential hazard of these liquids spreading and causing a fire to spread rapidly. This can be dangerous as it can lead to large-scale fires, making it a possible hazard associated with Class 3 liquids.Rate this question:
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- 6.
Which one of these is NOT a hazard for Class 1 materials?
- A.
Outbreak of fires
- B.
Danger of injuries via projectiles
- C.
Ear rupture is caused by the sound waves
- D.
Loss of body functions such as respiration.
Correct Answer
D. Loss of body functions such as respiration.Explanation
Loss of body functions such as respiration is not a hazard for Class 1 materials. Class 1 materials are substances and articles that have a mass explosion hazard. Hazards associated with Class 1 materials typically include outbreak of fires, danger of injuries via projectiles, and ear rupture caused by sound waves. However, loss of body functions such as respiration is not directly related to the hazards of Class 1 materials.Rate this question:
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- 7.
Which of the following regarding Class 4- Flammable Solids is true?
- A.
Substances that releases oxygen
- B.
Easily ignited and difficult to extinguish
- C.
Very reactive with combustibles - spontaneous combustion
- D.
A chemical substance that in itself can react to produce a gas at a relatively high temperature and pressure and at such a speed as to damage the surroundings.
Correct Answer
B. Easily ignited and difficult to extinguishExplanation
Easily ignited and difficult to extinguish is a true statement regarding Class 4- Flammable Solids. This means that substances classified as Class 4- Flammable Solids have a high susceptibility to catching fire and once ignited, they are challenging to extinguish. This characteristic poses a significant fire hazard and requires special precautions and firefighting techniques to control and suppress the flames.Rate this question:
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- 8.
How many sub-divisions does Class 5 – Oxidizing Substances have?
- A.
2
- B.
5
- C.
8
- D.
13
Correct Answer
A. 2Explanation
Class 5 - Oxidizing Substances has 2 sub-divisions.Rate this question:
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- 9.
Which of the following HazMat Class has the following property: “reacts with metals – liberate hydrogen”?
- A.
Class 2 Gases
- B.
Class 3 Liquids
- C.
Class 7 Radioactives
- D.
Class 8 Corrosives
Correct Answer
D. Class 8 CorrosivesExplanation
Class 8 Corrosives is the correct answer because corrosive substances have the property of reacting with metals and liberating hydrogen. Corrosives are substances that can cause damage or destruction to living tissue, materials, or the environment through chemical reaction. When corrosives come into contact with metals, they can cause a chemical reaction that produces hydrogen gas as a byproduct. This liberation of hydrogen gas is a characteristic property of corrosives.Rate this question:
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- 10.
What are hazardous materials?
- A.
Substances which are not useful at all
- B.
Substances which will always cause harm
- C.
Substances which will always destroy properties and pollute the environment
- D.
Substances which have the potential to do harm to living tissues, damage to property and pollute the environment
Correct Answer
D. Substances which have the potential to do harm to living tissues, damage to property and pollute the environmentExplanation
Hazardous materials are substances that have the potential to cause harm to living tissues, damage to property, and pollute the environment. This means that these substances can be dangerous to human health, can cause destruction to physical structures and belongings, and can have negative impacts on the natural surroundings. It is important to handle and dispose of hazardous materials properly to minimize the risks they pose to individuals and the environment.Rate this question:
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- 11.
What should you do when you see a suspicious object (bomb) in public?
- A.
Do not do anything about it
- B.
Report it immediately to your best friend
- C.
Check the object to see if it is really a bomb
- D.
Move away and warn people in the area about it, report immediately to the police
Correct Answer
D. Move away and warn people in the area about it, report immediately to the policeExplanation
When encountering a suspicious object, it is important to prioritize the safety of oneself and others. Moving away from the object helps to minimize the potential harm in case it is indeed a bomb. Additionally, warning people in the area about the object ensures that they are also aware of the potential danger. Lastly, reporting the situation immediately to the police allows the authorities to take necessary actions and handle the situation professionally.Rate this question:
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- 12.
You can suspect a letter or parcel is a bomb, if there is oily stains or discolouration on wrapping material and it gives off an unusual odour similar to almond or marzipan. True or False?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
If there are oily stains or discolouration on the wrapping material and it gives off an unusual odour similar to almond or marzipan, it can be an indication that the letter or parcel is a bomb.Rate this question:
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- 13.
How many types of Chemical Agents are there?
- A.
2
- B.
4
- C.
5
- D.
6
Correct Answer
B. 4Explanation
There are four types of Chemical Agents.Rate this question:
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- 14.
Which of the following is not a Chemical Agent?
- A.
Anthrax Agents
- B.
Nerve Agents
- C.
Blood Agents
- D.
Blister Agents
Correct Answer
A. Anthrax AgentsExplanation
Anthrax agents are not considered chemical agents because they are biological agents. Chemical agents refer to substances that are used to cause harm or damage through their chemical properties, while anthrax agents are bacteria that cause infection and disease. Nerve agents, blood agents, and blister agents, on the other hand, are all examples of chemical agents as they are synthetic chemicals designed to cause harm to humans.Rate this question:
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- 15.
One of the initial symptoms of Nerve Agents is Runny Nose.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Nerve agents are highly toxic chemicals that affect the nervous system. When exposed to nerve agents, one of the initial symptoms is a runny nose. This occurs because the nerve agents disrupt the normal functioning of the nervous system, leading to excessive production of mucus in the nasal passages. Therefore, it is true that a runny nose is an initial symptom of nerve agents.Rate this question:
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- 16.
Which of the following about Blood Agents is FALSE?
- A.
Blood Agents can be absorbed by inhalation or through the skin
- B.
Blood Agents spread through bodily fluids
- C.
Symtoms range from headaches, nausea, vomiting etc.
- D.
Blood Agents prevent the normal transfer of oxygen from the body to the blood tissues, possibly resulting in death
Correct Answer
B. Blood Agents spread through bodily fluidsExplanation
Blood Agents do not spread through bodily fluids. They are chemical substances that prevent the normal transfer of oxygen from the body to the blood tissues, potentially leading to death. These agents can be absorbed by inhalation or through the skin, and their symptoms can range from headaches, nausea, vomiting, etc.Rate this question:
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- 17.
Which of the following about Blister Agents is true?
- A.
It always has a strong smell
- B.
It causes only minor burns to the skins & eyes
- C.
It is heavy and oily liquid, colorless and nearly odorless
- D.
It is not fatal
Correct Answer
C. It is heavy and oily liquid, colorless and nearly odorlessExplanation
Blister agents are heavy and oily liquids that are colorless and nearly odorless. This means that they do not have a strong smell. They are known for causing severe burns to the skin and eyes, so the statement "It causes only minor burns to the skin & eyes" is incorrect. Blister agents are highly toxic and can be fatal, so the statement "It is not fatal" is also incorrect. Therefore, the only true statement about blister agents is that they are heavy and oily liquids, colorless and nearly odorless.Rate this question:
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- 18.
Which of the following are hazards of Class 7- Radioactives?
- A.
Burns
- B.
Cancer
- C.
Nausea
- D.
All the above
Correct Answer
D. All the aboveExplanation
Class 7- Radioactives are hazardous materials that can cause burns, cancer, and nausea. Radioactive materials emit ionizing radiation, which can penetrate and damage living tissues, leading to burns. Exposure to radioactive materials can also increase the risk of developing cancer due to the damage caused to DNA. Additionally, exposure to high levels of radiation can cause nausea and other symptoms of radiation sickness. Therefore, all the options mentioned (burns, cancer, and nausea) are hazards associated with Class 7- Radioactives.Rate this question:
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- 19.
Anthrax has no colour, smell or taste and thus not easily detected by senses. True or false?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Anthrax is a deadly infectious disease caused by the bacterium Bacillus anthracis. It is known to have no color, smell, or taste, making it difficult to detect through the senses. Therefore, the statement that anthrax is not easily detected by the senses is true.Rate this question:
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- 20.
A parcel suspected of containing anthrax is open and a colourless liquid from the parcel is spilled. What should you do?
- A.
Turn on local fan or ventilation units in the area
- B.
Place the parcel in a plastic bag and seal it with your bare hands
- C.
Report the matter to the police and clean up the spillage while waiting
- D.
Cover the spilled contents immediately with some clothing, leave the room and close the door to prevent others from entering
Correct Answer
D. Cover the spilled contents immediately with some clothing, leave the room and close the door to prevent others from enteringExplanation
In the given scenario, the correct answer is to cover the spilled contents immediately with some clothing, leave the room, and close the door to prevent others from entering. This is the appropriate action to take when dealing with a suspected anthrax spillage. By covering the spilled liquid, you minimize the potential spread of the substance. Leaving the room and closing the door helps to isolate the area and prevent others from being exposed to the potential danger.Rate this question:
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- 21.
For Qn 21 to 25, match the correct classes with the description of properties Answers will NOT be repeated for qn 21 to 25. -Substances which emits radiation -Non-ionizing radiation - radio waves, UV, infrared -Ionizing radiation
- Alpha
- Beta
- Gamma
- A.
Class 4- Solids
- B.
Class 5- Oxidizer
- C.
Class 6- Poison
- D.
Class 7- Radioactives
- E.
Class 8- Corrosives
Correct Answer
D. Class 7- RadioactivesExplanation
Class 7- Radioactives is the correct answer because substances that emit radiation are classified as radioactives. Radioactive materials emit ionizing radiation, which includes alpha particles, beta particles, and gamma rays. These types of radiation can cause damage to living organisms and have various applications in medicine, industry, and research. Therefore, substances that emit radiation are classified as Class 7- Radioactives.Rate this question:
- 22.
- Easily ignited and difficult to extinguish eg. magnesium
- Air-reactive substances (pyrophoric) eg. White phosphorus
- Water-reactive substances eg. sodium, calcium carbide
- A.
Class 4- Solids
- B.
Class 5- Oxidizer
- C.
Class 6- Poison
- D.
Class 7- Radioactives
- E.
Class 8- Corrosives
Correct Answer
A. Class 4- SolidsExplanation
The given correct answer is "Class 4- Solids" because the substances mentioned in the question, such as magnesium and white phosphorus, are easily ignited and difficult to extinguish. Class 4 substances are flammable solids that can sustain combustion. They can be ignited under normal conditions and may continue to burn even after the ignition source is removed. Therefore, classifying them as Class 4- Solids is appropriate.Rate this question:
- 23.
- Most widely used in industry
- Sulfuric acid most common
- Substances that can cause visible destruction to tissue
- Acids
- Bases
- A.
Class 4- Solids
- B.
Class 5- Oxidizer
- C.
Class 6- Poison
- D.
Class 7- Radioactives
- E.
Class 8- Corrosives
Correct Answer
E. Class 8- CorrosivesExplanation
The correct answer is Class 8- Corrosives because substances that can cause visible destruction to tissue are classified as corrosives. Sulfuric acid, which is mentioned in the given information, is a common example of a corrosive substance. Corrosives are widely used in various industries for their ability to dissolve or eat away materials, making them the most widely used class of substances in industry.Rate this question:
- 24.
-
Substances that releases oxygen
- hypochlorites, chlorates, perchlorates, permanganates, hydrogen peroxide, nitrates
-
Very reactive with combustibles - spontaneous combustion
- Hydrogen peroxide and wood shavings
- Nitric acid and organic combustibles
- A.
Class 4- Solids
- B.
Class 5- Oxidizer
- C.
Class 6- Poison
- D.
Class 7- Radioactives
- E.
Class 8- Corrosives
Correct Answer
B. Class 5- OxidizerExplanation
The substances listed in the question, such as hypochlorites, chlorates, perchlorates, permanganates, hydrogen peroxide, and nitrates, are known as oxidizers. Oxidizers are substances that release oxygen and can support combustion. They are highly reactive with combustible materials and can cause spontaneous combustion. Therefore, the correct answer is Class 5- Oxidizer.Rate this question:
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Substances that releases oxygen
- 25.
-
Substances that cause death or serious health effects upon exposure
- Inhalation
- Ingestion
- Absorption
- A.
Class 4- Solids
- B.
Class 5- Oxidizer
- C.
Class 6- Poison
- D.
Class 7- Radioactives
- E.
Class 8- Corrosives
Correct Answer
C. Class 6- PoisonExplanation
Class 6 substances are classified as poisons because they can cause death or serious health effects upon exposure. This can occur through inhalation, ingestion, or absorption. These substances are highly toxic and can have severe consequences on the human body. It is important to handle and store these substances with extreme caution to prevent any harm to human health.Rate this question:
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Substances that cause death or serious health effects upon exposure
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