Multiple choice general knowledge science & technology

In oxacetylane welding, acetylene is produced using

  1. Ca (OH)2 and CO2

  2. Ca C2 and H2O

  3. CaCO3 and H2O

  4. CH4 and H2SO4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acetylene gas is produced by reacting calcium carbide (CaC2) with water (H2O), producing acetylene and calcium hydroxide. The chemical reaction is: CaC2 + 2H2O → C2H2 + Ca(OH)2. This is the standard industrial method for generating acetylene gas for welding.

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