Samacheer Kalvi 12th Chemistry Solutions Chapter 1
If the sulphide ore of copper contains iron, the silica (SiO 2) Oxide ore – Magnetic separation process Answer: (c) Gold ore – Leaching method. Question 5. (a) Aluminium – Galvanising metals (b) Zinc – Cooking vessels (c) Iron – Cutlery (d) Copper – Dental fillings Answer: (c) Iron -Cutlery. VII. Find out the incorrect pair: Question 1. (a) Copper – Least reactive (b) Clay