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-p-Block elements - I — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
Which is not obtained when metal carbides react with $H_2O$ ?
  • ✓
    $A{l_4}{C_3} + {H_2}O \longrightarrow CH \equiv CH$
  • B
    $CaC_2 + H_2O  \longrightarrow CH \equiv CH$
  • C
    $Mg_4C_3 + H_2O \longrightarrow C{H_3}C \equiv CH$
  • D
    $Be_2C + H_2O \longrightarrow CH_4$
✓

Answer

Correct option: A.
$A{l_4}{C_3} + {H_2}O \longrightarrow CH \equiv CH$
a
$\mathrm{Al}_{4} \mathrm{C}_{3}+\mathrm{H}_{2} \mathrm{O} \rightarrow 4 \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{CH}_{4}$

Thus alkane is formed instead of acetylene.

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