Question

a metal is found in liquid state it is widely used in instrument for measuring blood pressure in which in form does it occur in nature how can we extract this metal from its what
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Answer 1

Answer:

It occurs in nature as a sulphide ore called Cinnabar (HgS). It is first concentrated or enriched by removing gangue. It is then roasted in presence of excess air to obtain its oxide(HgO). This oxide form of Mercury is then reduced by heat alone to obtain the metal in liquid state.