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ICSE Class 10 Chemistry Question 6 of 23

Model Paper 2 — Question 12

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12
Question

Question 1(xii)

The organic compound prepared when calcium carbide reacts with water:

  1. Methane
  2. Ethane
  3. Acetylene
  4. Ethene
Answer

Acetylene

Reason — In the laboratory preparation of Acetylene, calcium carbide reacts with water to give acetylene and calcium hydroxide.

CaC2calcium carbide+2H2Owater⟶C2H2Acetylene+Ca(OH)2calcium hydroxide\underset{\text{calcium carbide}}{\text{CaC}_2} + \underset{\text{water}}{2\text{H}_2\text{O}} \longrightarrow \underset{\text{Acetylene}}{\text{C}_2\text{H}_2} + \underset{\text{calcium hydroxide}}{\text{Ca(OH)}_2}

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