What hazardous materials class covers flammable solids?

a.Class 2

b.Class 3

c.Class 4

d.Class 5

Explanation

Class 4 covers flammable solids. This includes flammable solids (Division 4.1), spontaneously combustible materials (Division 4.2), and dangerous when wet materials (Division 4.3).

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About the CDL Exam

The CDL (Commercial Driver License) exam tests your knowledge of commercial driving rules, safety procedures, and vehicle operation. You must score 80% or higher to pass the written knowledge test. The exam covers general knowledge, air brakes, combination vehicles, and various endorsements.

This question is from the HazMat Endorsement Test #1 section. Practice with more questions from this category to build confidence before taking the official DMV test.

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