Unit 7 • Class 12Chemistry (Chem.202)
Metallurgy & Heavy Metals (Cu, Zn, Fe, Ag, Hg)
धातुविज्ञान तथा भारी धातुहरू (तामा, जस्ता, फलाम, चाँदी, पारो)
Extraction of Copper from copper pyrites, Zinc from zinc blende, Iron from haematite (blast furnace), Silver from argentite (cyanide process), Mercury from cinnabar; important compounds and tests.