Multiple choice

Which of the following produces acetylene gas on hydrolysis?

  1. Be2C

  2. Al4C3

  3. CaC2

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Calcium carbide (CaC₂) reacts with water to produce acetylene gas (C₂H₂) and calcium hydroxide: CaC₂ + 2H₂O → Ca(OH)₂ + C₂H₂. Beryllium carbide (Be₂C) and aluminum carbide (Al₄C₃) produce methane (CH₄), not acetylene, when hydrolyzed. Therefore 'All of these' is incorrect.

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