Penna. Mine Officials' Exam Practice Tests
Gas Detection & Ventilation - Module 4

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Question 1 of 25

1.  How is acetylene formed?

Choices:
  1. Methane is heated or burned in a low oxygen atmosphere
  2. Methane is heated or burned in a high oxygen atmosphere
  3. Methane is mixed with hydrogen in the presence of oxygen
  4. Methane is mixed with hydrogen in the absence of oxygen

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