Why might opening the acetylene cylinder's square stem valve ...

[jc611]

Why might opening the acetylene cylinder's square stem valve three-and-a-half turns with a wrench and leaving the wrench on the valve while working create a hazardous situation?
 
  A) The valve should be opened less than two-and-a-half turns.
  B) The valve should be opened at least four turns to minimize internal pressure.
  C) The wrench should be removed from the valve while soldering.
  D) The wrench should not be used on a square stem valve.

Question 2

How many cubic feet of acetylene gas is stored in a size MC acetylene tank weighing 8.0 pounds?
 
  A) 0 ft3 B) 7.5 ft3 C) 5 ft3 D) 10 ft3

[ju]

Answer to Question 1

A

Answer to Question 2

D

[jc611]

Thanks

[ju]

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