Consider the following ores:
Calamine, Anglesite, Cerussite , Dolomite, Galena, Horn silver, Cassiterite. The total number of ores containing lead are ??

Dear Student,
We need to see which ores contain lead (Pb) :
Calamine :-  ZnCO₃
Anglesite :-  PbSO₄
Cerussite :-  PbCO₃
Dolomite :-   MgCO₃
Galena :- PbS
Horn silver :-  AgCl 
Cassiterite :-  SnO₂
The ore containing Pb(lead) is anglesite,cerussite,galena
Regards