NCDCC HAZMAT Theory Assessment

25 Questions | By Weilun07 | Updated: Mar 19, 2022 | Attempts: 121

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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
2.

Which of the following is Class 1 hazard?
- A.
- B.
- C.
- D.
3.

How many classes of HazMat are there according to the UN Classification of HazMat?
- A.
  
  5
- B.
  
  6
- C.
  
  8
- D.
  
  9
4.

Which of the followings HazMat Classes would explode or burn fiercely when mixed with ordinary combustibles?
- A.
- B.
- C.
- D.
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
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.
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.
8.

How many sub-divisions does Class 5 – Oxidizing Substances have?
- A.
  
  2
- B.
  
  5
- C.
  
  8
- D.
  
  13
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
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
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
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
13.

How many types of Chemical Agents are there?
- A.
  
  2
- B.
  
  4
- C.
  
  5
- D.
  
  6
14.

Which of the following is not a Chemical Agent?
- A.
  
  Anthrax Agents
- B.
  
  Nerve Agents
- C.
  
  Blood Agents
- D.
  
  Blister Agents
15.

One of the initial symptoms of Nerve Agents is Runny Nose.
- A.
  
  True
- B.
  
  False
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
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
18.

Which of the following are hazards of Class 7- Radioactives?
- A.
  
  Burns
- B.
  
  Cancer
- C.
  
  Nausea
- D.
  
  All the above
19.

Anthrax has no colour, smell or taste and thus not easily detected by senses. True or false?
- A.
  
  True
- B.
  
  False
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
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
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
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
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
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