Practice question

In general, when loading a tank with flammable liquids:

  1. The engine should be running.
  2. A ground should be established before opening the filling hole.
  3. A ground should be broken right before opening the filling hole.
  4. The filling hole should be locked during loading.

Answer: B — A ground should be established before opening the filling hole.

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: District Of Columbia CDL HazMat Test 1 →