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WELD 121 Practice Test
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Acetylene production is made up of which components?
Oxygen and hydrogen
Calcium carbide and water
Oxygen and calcium carbide
Nitrogen and calcium oxide
Reveal Answer
Correct Answer:
Oxygen and calcium carbide
Explanation:
Acetylene is produced by hydrolyzing calcium carbide with water. When CaC2 meets H2O, it reacts to form acetylene gas and calcium hydroxide: CaC2 + H2O → C2H2 + Ca(OH)2. Therefore, the essential components are calcium carbide and water. Oxygen isn’t part of this production step, so pairing calcium carbide with oxygen wouldn’t generate acetylene. The other options don’t provide the necessary reactants to produce acetylene.
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