Which hazard class is represented by the placard illustration that states 'Dangerous when wet'?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Enhance your HazMat awareness and operational skills with our comprehensive exam. Study with detailed questions and explanations to excel in your certification. Get prepared today!

Multiple Choice

Which hazard class is represented by the placard illustration that states 'Dangerous when wet'?

Explanation:
That placard warns about materials that react with water to release flammable gas. It’s the label used for Class 4.3 (water-reactive substances). The phrase “Dangerous when wet” tells responders to keep the material dry and avoid contact with moisture, since exposure to water can generate flammable gas. This is distinct from other hazard classes shown in the other options—radioactive materials (Class 7), toxic gases (Class 2), and corrosives (Class 8)—which use different signs and warnings.

That placard warns about materials that react with water to release flammable gas. It’s the label used for Class 4.3 (water-reactive substances). The phrase “Dangerous when wet” tells responders to keep the material dry and avoid contact with moisture, since exposure to water can generate flammable gas. This is distinct from other hazard classes shown in the other options—radioactive materials (Class 7), toxic gases (Class 2), and corrosives (Class 8)—which use different signs and warnings.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy