<prompt> Burnout of casting to expand the mould is done at a temperature of100 C538 C675-710 CNone of the above  <response>: The burnout operation is done toDry the moisture out of the mould: The mould is heated at 212 F 100 C for 1 hour to vapourize the moisture content in the investment.Expand the mould to compensate for solidification shrinkage of the metal: The mould is heated at 1000 F 538 C for 1 hour to complete mould expansionEliminate the pattern plastics and waxes by melting and vapourization: The mould is heated at 1250 to 1300 F 675 C to and 710 C for 1 to 2 hours to eliminate and vapourize the traces of wax. 