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प्रश्न
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
उत्तर
(d) Zinc.
Calamine is an ore of zinc and its compound is zinc carbonate (ZnCO3).
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संबंधित प्रश्न
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OR
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Care must be taken while diluting concentrated nitric acid with water. Why?
