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Class 1 Commercial Driver Practice · Question

A yellow sign with a black propeller symbol and 'Radioactive' indicates what about the cargo?

The propeller symbol is the trefoil, universally recognized as the symbol for radioactivity, indicating the presence of radioactive materials (Hazard Class 7).

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Question: A yellow sign with a black propeller symbol and 'Radioactive' indicates what about the cargo?

Answer options:

  • It is highly flammable. ✅ It emits ionizing radiation.
  • It is a biohazard material.
  • It reacts violently with water.

Correct answer: It emits ionizing radiation.

Explanation: The propeller symbol is the trefoil, universally recognized as the symbol for radioactivity, indicating the presence of radioactive materials (Hazard Class 7).

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