Which of the following facts is not truegt

Options

A. If `E^(@)(M^(n+)//M)` is negative, `H^(+)` will be reduced to `H_(2)` by the metal M
B. 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.

Answer

D

Explanation

Active metal has lower `E_(red)^(@)` than `E_(red)^(@)` of hydrogen so can not be reduced by hydrogen.