Name the metallic ore from which we extract metal, which is used in the blood pressure measuring instrument.
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ᴍᴇʀᴄᴜʀʏ ɪs ᴛʜᴇ ᴍᴇᴛᴀʟ ᴡʜɪᴄʜ ɪs ғᴏᴜɴᴅ ɪɴ ʟɪǫᴜɪᴅ sᴛᴀᴛᴇ ᴀɴᴅ ɪs ᴜsᴇᴅ ɪɴ ɪɴsᴛʀᴜᴍᴇɴᴛs ғᴏʀ ᴍᴇᴀsᴜʀɪɴɢ ʙʟᴏᴏᴅ ᴘʀᴇssᴜʀᴇ. ɪᴛ ᴏᴄᴄᴜʀs ɪɴ ɴᴀᴛᴜʀᴇ ᴀs sᴜʟᴘʜɪᴅᴇ ᴏʀᴇ ɪɴ ᴛʜᴇ ғᴏʀᴍ ᴏғ ᴄɪɴɴᴀʙᴀʀ (ʜɢs). ᴍᴇʀᴄᴜʀʏ ɪs ᴏʙᴛᴀɪɴᴇᴅ ғʀᴏᴍ ᴘᴜʀɪғɪᴇᴅ ᴄɪɴɴᴀʙᴀʀ ʙʏ ʀᴏᴀsᴛɪɴɢ ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴀɪʀ.
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Mercury is the metal which is found in liquid state and is used in instruments for measuring blood pressure. It occurs in nature as sulphide ore in the form of Cinnabar (HgS). Mercury is obtained from purified cinnabar by roasting in the presence of air.
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