Transportation of Dangerous Goods (TDG) Road Course: Classes, UN numbers and shipping names

1. Question 1 sur 16

   Dangerous goods in Canada are sorted into how many classes?

   • A6
   • B12
   • C7
   • D9
   Voir la réponse

   Réponse: D. 9

   The Schedule to the TDG Act lists nine classes, from Class 1 Explosives to Class 9 Miscellaneous.

2. Question 2 sur 16

   Which class is used for corrosives?

   • AClass 9
   • BClass 8
   • CClass 5
   • DClass 6
   Voir la réponse

   Réponse: B. Class 8

   Class 8 is Corrosives. Class 5 is oxidizers and organic peroxides, Class 6 is toxic and infectious substances.

3. Question 3 sur 16

   Which kind of dangerous goods is in Class 2?

   • AFlammable liquids, such as gasoline and acetone
   • BRadioactive materials that give off radiation
   • CGases, such as compressed or liquefied gases
   • DOxidizing substances that can feed a fire
   Voir la réponse

   Réponse: C. Gases, such as compressed or liquefied gases

   Class 2 is gases: compressed, deeply refrigerated, liquefied or dissolved under pressure.

4. Question 4 sur 16

   Who must classify dangerous goods before the carrier takes possession of them?

   • AThe consignor
   • BThe driver
   • CThe consignee
   • DThe carrier
   Voir la réponse

   Réponse: A. The consignor

   Section 2.2: before a carrier takes possession, the consignor must determine the classification.

5. Question 5 sur 16

   What does a packing group tell you?

   • AHow dangerous the goods are
   • BHow big the package is
   • CHow many packages are in the load
   • DWhich order to load the packages
   Voir la réponse

   Réponse: A. How dangerous the goods are

   A packing group reflects the inherent danger: I is great danger, II medium danger and III minor danger.

6. Question 6 sur 16

   Which packing group shows the greatest danger?

   • APacking Group I
   • BPacking Group III
   • CPacking Group IV
   • DPacking Group II
   Voir la réponse

   Réponse: A. Packing Group I

   Packing Group I means great danger, II medium and III minor. There is no Packing Group IV.

7. Question 7 sur 16

   Under the TDG Regulations, what is a UN number?

   • AThe registration number Transport Canada gives each consignor
   • BThe phone number to call the United Nations about a spill
   • CThe licence plate number of the truck that carries the goods
   • DColumn 1 entry in Schedule 1 that identifies the goods
   Voir la réponse

   Réponse: D. Column 1 entry in Schedule 1 that identifies the goods

   A UN number is an entry in column 1 of Schedule 1, for example UN1090 for acetone.

8. Question 8 sur 16

   Where do you find the correct shipping name for dangerous goods?

   • AIn Schedule 2, with the special provisions
   • BIn the carrier's price list for each product
   • COn the brand label printed by the product maker
   • DIn upper case in column 2 of Schedule 1
   Voir la réponse

   Réponse: D. In upper case in column 2 of Schedule 1

   The shipping name is an entry in upper case letters in column 2 of Schedule 1, and that name must be used.

9. Question 9 sur 16

   In column 3 of Schedule 1, how is a subsidiary class shown?

   • AIn parentheses after the primary class
   • BIn red ink at the bottom of each page
   • CIn bold type in front of the primary class
   • DIn column 7, right next to the ERAP index
   Voir la réponse

   Réponse: A. In parentheses after the primary class

   The primary class is the first class in column 3; any subsidiary class is shown in parentheses.

10. Question 10 sur 16

    What is a "technical name" under the TDG Regulations?

    • AA chemical or scientific name, not a trade name
    • BThe brand name printed on the front of the product
    • CA short code that the driver chooses for the load
    • DThe carrier's own nickname for that type of load
    Voir la réponse

    Réponse: A. A chemical or scientific name, not a trade name

    A technical name is a chemical name or other name used in scientific or technical texts; trade names are not technical names.

11. Question 11 sur 16

    What is in Class 4.3?

    • ASubstances that give off flammable gas when wet
    • BSubstances that can catch fire by themselves in air
    • CFlammable solids that burn easily when lit
    • DToxic substances that can harm people if swallowed
    Voir la réponse

    Réponse: A. Substances that give off flammable gas when wet

    Class 4.3 is water-reactive substances. Spontaneous combustion is 4.2, and flammable solids are 4.1.

12. Question 12 sur 16

    Which division is used for organic peroxides?

    • AClass 5.2
    • BClass 6.1
    • CClass 5.1
    • DClass 4.2
    Voir la réponse

    Réponse: A. Class 5.2

    Class 5.1 is oxidizing substances and Class 5.2 is organic peroxides.

13. Question 13 sur 16

    A liquid is Class 3 if its closed-cup flash point is at or below which temperature?

    • A100°C
    • B23°C
    • C60°C
    • D35°C
    Voir la réponse

    Réponse: C. 60°C

    Section 2.18: Class 3 includes liquids with a flash point of 60°C or less (closed cup). 23°C and 35°C are packing group limits.

14. Question 14 sur 16

    A flammable liquid has an initial boiling point of 30°C. Which packing group is it in?

    • AIt depends on the package size
    • BPacking Group I
    • CPacking Group III
    • DPacking Group II
    Voir la réponse

    Réponse: B. Packing Group I

    Section 2.19: a Class 3 liquid with an initial boiling point of 35°C or less is in Packing Group I.

15. Question 15 sur 16

    A flammable liquid has an initial boiling point of 80°C and a flash point of 15°C. Which packing group is it in?

    • APacking Group II
    • BIt is not in Class 3
    • CPacking Group III
    • DPacking Group I
    Voir la réponse

    Réponse: A. Packing Group II

    Boiling point above 35°C with a flash point below 23°C means Packing Group II under section 2.19.

16. Question 16 sur 16

    A liquid has a flash point of 40°C and an initial boiling point of 150°C. How is it classified?

    • AClass 3, Packing Group II
    • BNot dangerous goods, because the flash point is above 23°C
    • CClass 3, Packing Group III
    • DClass 3, Packing Group I
    Voir la réponse

    Réponse: C. Class 3, Packing Group III

    A flash point of 60°C or less makes it Class 3. It does not meet the Packing Group I or II criteria, so it is Packing Group III.

Clavier : 1–4 pour répondre, Entrée pour la question suivante.