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(a) Which solution is used for the leac...

(a) Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver ?
(b) Out of C and CO, which is a better reducing agent at the lower temperature rangein the blast furnace to extract iron form the oxide ore ?

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(a) Dilute solution of NaCl and KCN is used for leaching of silver metal in the presence of air in the metallurgy of silver.
(b) Out of C and CO, Cois a better reducing agent at the lower temperature range because `DeltaG_((CO,CO_2))lt DeltaG_((Fe,FeO))`. So, CO will reduce FeO, will its self be oxidised to `CO_2`.
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-Set -I
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