2. Examples of Transition elementsCopperIronTungsten Scandium 3.
Examples of Transition elementsNickelCadmium 4. sapphire 5. emerald
6. amethyst 7. ruby 8. Topaz 9. Uses in industries1. In the Haber
process, iron is used as a catalyst in the manufacture of ammonia,
NH3 10. Uses in industries2. Platinum is used as a catalyst in the
Ostwald process for manufacturing of nitric acid,HNO3 11. Uses in
industries3. In the manufacture of margarine, nickel is used as a
catalyst 12. Uses in industries4. Vanadium (V) oxide , V2O5 is used
as a catalyst in the Contact process for the manufacture of
sulphuric acid, H2SO4
