Chemistry
Medium
Question
The gases used in different types of welding would include:
A
Oxygen and hydrogen
B
Oxygen, hydrogen, acetylene and nitrogen
C
Oxygen, acetylene and argon
D
Oxygen and acetylene
✓ Official correct answer
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A
Oxygen and hydrogen
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B
Oxygen, hydrogen, acetylene and nitrogen
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C
Oxygen, acetylene and argon
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D
Oxygen and acetylene
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