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JEE Main Chemistry question

ChemistryElectrochemistryJEE Main

A student made the following observations: (i) clean copper metal did not react with 1 M solution; (ii) clean lead metal dissolved in 1 M solution and Ag metal crystals appeared; (iii) clean silver metal did not react with 1 M solution. The order of decreasing reducing character of the three metals is

Answer: (C)

Solution

(i) No reaction means Cu cannot reduce , so Cu is a weaker reducing agent than Pb. (ii) Pb dissolving while Ag deposits means Pb reduces

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Question ID VK-143913