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JAMB Chemistry 1987 Question 49

Question 49

Hydrocarbons

When water drops are added to calcium carbide in a container and the gas produced is passed through a jet and lighted, the resultant flame is called an

  1. A.oxyethylene flame
  2. B.oxyhydrocarbon flame
  3. C.oxyacetylene flame
  4. D.oxymethane flame
Show the answer and explanation

Answer: C (oxyacetylene flame)

Explanation

Water and calcium carbide produce ethyne (acetylene). Burnt with oxygen it gives the very hot oxyacetylene flame.