Answer Key: Self-Test B-5.1

  1. c. Oxygen gas
  2. a. Acetylene gas
  3. d. Close both the oxygen and acetylene cylinder valves
  4. 28, 193; lower
  5. Heat
  6. All the way; ¼ to ½ turn
  7. Boil off or evaporate
  8. MT
  9. Cracked; closed
  10. Clockwise
  11. Acetylene
  12. Cylinder
  13. Working
  14. Green or black
  15. Red
  16. Torch; hose
  17. Preheat oxygen
  18. Torch; cylinder

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