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Hydrocarbons — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
MCQ
Metal carbides on reaction with H2​O forms CH4​.Carbide can be:
  • A
    CaC2​
  • B
    Mg3​C2​
  • C
    Be2​C
  • D
    SiC
✓

Answer

  1. Be2​C

Explanation:

Different metal carbides react with H2​O, give the following compounds.

Be2​C(s) + 4H2​O(l) → 2Be(OH)2​(s) + CH4​(g)

CaC2​ + 2H2​O → C2​H2 ​+ Ca(OH)2​

Mg3​C2​ + 4H2​O → 2Mg(OH)2 ​+ C3​H4​

Here, beryllium carbide is a metal carbide that forms methane.

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