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Hazardous Materials (Hazmat) Practice Question 46

H or XHazardous Materials (Hazmat) · Question 46

The National Response Center number is:

• A1-800-424-8802
• B1-800-424-9300
• C1-800-555-1212
• D911

Correct answer: A. 1-800-424-8802

Why: Call NRC at 1-800-424-8802 to report serious hazmat transportation incidents — death, hospitalization, evacuation, $500,000 damage, RQ release, etc.

How this question fits the Hazmat test

Mishandled hazmat causes catastrophic public consequences. The endorsement is restricted, requires fingerprint background screening through the TSA, and demands deeper familiarity with regulatory paperwork than any other CDL endorsement.

Study technique for this topic

Master the Hazardous Materials Table columns, know the placarding thresholds, and learn which classes can never be loaded together. Practice locating UN/NA identification numbers and understanding the segregation chart.

Related Hazmat practice questions

• Q49. A driver should refuse a leaking package because:
• Q62. A driver must understand the difference between marking, labeling, and placarding because:
• Q11. A driver must inspect tires of a placarded hazmat vehicle:
• Q24. When fueling a placarded vehicle:
• Q37. Hazmat training of CDL drivers must be:

Continue your CDL preparation

The Hazardous Materials (Hazmat) portion of the CDL knowledge exam covers more than this single question. Use this site's full Hazardous Materials (Hazmat) bank to drill every topic, then test yourself with one of our state-specific practice sets to confirm you are ready for the actual DMV exam in your state. Always check your state's CDL handbook for any local addenda before the test day.

If you are still building your overall CDL foundation, start with the General Knowledge bank — every CDL applicant must pass it — and then work outward to the endorsements you plan to add.