Question

To     obtain     Zn     from     zinc     sulphide     two
chemical  reactions  are  involved
Roasting                       Reducing
ZnS       ======>  ZnO     ===>
A                                   B
Write  the  equations  for  A  and  B.


MSCERT Class 10 General Science Ch8 Understanding Metals and Non Metals

Answer 1

ZnS (on roasting) -------> ZnO (on reducing to Zn with carbon) -----> ZnO + C  ------> Zn + CO

A = Zn
B = CO

Answer 2

ZnS  => ZnO (on roasting form)

When Zn is reduced to C

ZnO + C  =>  Zn + CO (Zn is obtained)