Which of the following carbides on treatment with water give methane?

1.	Which of the following carbides on treatment with water give methane?
Answer» `CaC_(2)` `Be_(2)C` `Al_(4)C_(3)` `Mg_(2)C_(3)` SOLUTION :`Be_(2)C+4H_(2)Oto2Be(OH)_(2)+underset("METHANE")(CH_(4))` `Al_(4)C_(3)+12H_(2)Oto4Al(OH)_(3)+underset("Methane")(CH_(4))` `CaC_(2)+2H_(2)OtoCa(OH)_(2)+underset("Acetylene")(C_(2)H_(2))` `MgC_(3)+4H_(2)Oto2Mg(OH)_(2)+underset("PROPYNE")(HC-=C-CH_(3))`

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