i. Etanol from aceetylene:
ii. Lead tetrathyl from sodium - lead alloy:
`4C_(2)H_(5)Br + underset("alloy")underset("Sodium-lead")(4(Na//Pb)) rarr underset("lead")underset("Tetrachtyl")(Pb (C_(2) H_(5))_(4)) + 4 NaBr + 3Pb`
iii. Methyl chloride form aluminium carbide:
`underset("carbide")underset("Aluminium")(Al_(4)C_(3)) overset(H_(2)O)(rarr) CH_(4) underset(hv)overset(Cl_(2))(rarr) underset("chloride")underset("Methyl")(CH_(3)Cl)`