A series of reactions is carried out on the alloy (A) formed of two metals, as in the following scheme : Amount of ppt. (B) +NAOH(ag) +NaOHçag) Decreases and a Alloy Aqueous solution Ppt. (B) white green ppt. remains What are the two metals forming alloy (A)?. a) Copper and aluminum b) Copper and iron c) Iron and aluminum d) Iron and lead.

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