Chemistry
Which metal occurs as :
(a) a sulphide,
(b) a halide,
(c) a carbonate,
(d) an oxide.
Also give the names of their respective ores.
Metallurgy
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Answer
(a) a sulphide — Zn; Ore — Zinc Blende [ZnS]
(b) a halide — Sodium; Ore — Rock salt [NaCl]
(c) a carbonate — Calcium; Ore — Limestone [CaCO3]
(d) an oxide — Aluminium; Ore — Bauxite [Al2O3.2H2O]
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