The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction PbPb.
Amphoteric substances reacts with acids as well as bases.
PbO+2HNO3→Pb(NO3)2+H2O
PbO+2NaOH→Na2PbO2+H2O
On heating with carbon, PbO is reduced to Pb.
PbO+C→Pb+CO
PbO+CO→Pb+CO2