Topic module

Class Identification, Mixtures and Articles

Identify substances, mixtures, solutions and articles across the complete dangerous-goods class range.

Long-form learning

Concept to Risk to Memory to Check-up

Learn where rules live, practise applying them to complete facts, show the decision path and give precise references when the paper requests them.

Core concepts

Concept 1

Mixtures and solutions

Exam cue: Apply the class criteria, check named entries, and use the correct collective or NOS route only when necessary.

Concept 2

Articles

Exam cue: Confirm both classification and identification references, including any special provision affecting the entry.

Concept 3

Special provisions

Risk pitfalls and guardrails

Stopping after finding a plausible UN number without checking composition, state or special provisions.

Guardrail: Do not infer a current live item count from a sample booklet or apply a rule from the wrong transport mode.

Memory anchors

What is the core aim in Class Identification, Mixtures and Articles?

Identify substances, mixtures, solutions and articles across the complete dangerous-goods class range.

What is a dependable method for Class Identification, Mixtures and Articles?

Apply the class criteria, check named entries, and use the correct collective or NOS route only when necessary.

How should the regulatory reference be checked for Class Identification, Mixtures and Articles?

Confirm both classification and identification references, including any special provision affecting the entry.

What common error should be avoided in Class Identification, Mixtures and Articles?

Stopping after finding a plausible UN number without checking composition, state or special provisions.

What makes a DGSA answer complete for Class Identification, Mixtures and Articles?

State the conclusion, show the relevant decision steps, and provide the precise regulatory reference when requested.

Checkpoint rule

Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.

Knowledge Check (after reading)

Short check-up to confirm understanding of this module.

1-2 question checkpoint

A mixture contains a small amount of a toxic ingredient. What is the correct classification method?

Which entry should be preferred when an article has its own specific UN entry and meets its conditions?

Answer all questions to submit.

Next step personalized recommendations

Move forward only after this module is stable.

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