an ore on treatment with dilute hydrochloric acid produces brisk effervescence what type of it is and what steps will be taken to obtain metal from the ores
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Calcination process : When the metal carbonate on treatment with the dilute hydrochloric acid, it releases carbon dioxide as a colorless and odorless gas with brisk effervescence. Hence, by the calcination process the metal carbonate ore are converted to their metal oxides.
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Answer : The type of ore is, carbonate ore. The operation required to obtained metal from it will be, calcination process.
Explanation :
When an ore on the treatment with the dilute hydrochloric acid produces brisk effervescence to produce a colorless and odorless gas then the ore should be carbonate ore. The operation required to obtained metal from it will be, calcination process.
Calcination process : When the metal carbonate on treatment with the dilute hydrochloric acid, it releases carbon dioxide as a colorless and odorless gas with brisk effervescence. Hence, by the calcination process the metal carbonate ore are converted to their metal oxides.
The reactions involved are :
(1) The metal carbonate ore on heating gives metal oxide and carbon dioxide.
ZnoCo3 →(heat) Zno + Co2 
(2) The reduction of metal oxide with the carbon to give metal and carbon monoxide as a gas.
Zno + C →(heat) Zn + CO
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