Welding MCQ Questions and Answers Quiz

61. Acetylene is a fuel gas for gas cutting & welding composed of

  1. 7.7 of carbon & 92.3 % of hydrogen
  2. 92.3% carbon & 7.7 % hydrogen
  3. 100% carbon
  4. 50% carbon & 50% hydrogrn

62. Double-V and double-U butt welds are used for plates of thickness

  1. 1-5mm
  2. 5-10mm
  3. 10-15mm
  4. over 15mm
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