Select correct statement regarding silver extraction / purification process. (1) When the lead-s...

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Select correct statement regarding silver extraction / purification process.
(1) When the lead-silver alloy is rich in silver, lead is removed by the cupellation process.
(2) Lead is removed from argentiferous lead by Parkes process.
(3) Zinc forms an alloy with lead, from which lead is separated by distillation.
(4) Zinc forms an alloy with silver, from which zinc is separated by distillation.
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