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Which of the following facts is not truegtA. If `E^(@)(M^(n+)//M)` is negative, `H^(+)` will be reduced to `H_(2)` by the metal MB. If `E^(@)(M^(n+)//M)` is positive `Mn^(2+)` will e reduced to M by `H_(2)`C. In a cell `M^(n+)//M` electrode is attached to hydrogen-half cell. To produce spontaneous cell reaction, metal M will act as negative electrode.D. Compounds of active metals `(Zn,Na,Mg)` are reducible by `H_(2)` whereas those of noble metals `(Cu,Ag,Au)` are not reducible. |
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Answer» Correct Answer - D Active metal has lower `E_(red)^(@)` than `E_(red)^(@)` of hydrogen so can not be reduced by hydrogen. |
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