The reactions are as follows:
H2SO4 + Al = Al2(SO4)3 + H2H2SO4 + CuS = CuSO4 + H2SH2SO4 + MgO = MgSO4 + H2OH2SO4 + Fe = FeSO4 + H2
The reactions are as follows:
H2SO4 + Al = Al2(SO4)3 + H2
H2SO4 + CuS = CuSO4 + H2S
H2SO4 + MgO = MgSO4 + H2O
H2SO4 + Fe = FeSO4 + H2