Editor
Which one of the following statement is incorrect about SHE (standard hydrogen electrode)
Difficulty: Easy
A: 
Reduction potential of $Cu^{+2}$ is smaller than $H^{+}$ ions when it is couples with copper electrode.
B: 
$H_{2}$ gas is passed in it at 1 atm pressure.
C: 
Its oxidation potential and reduction potential is zero.
D: 
It is made of a platinum wire dipped in HCl solution.
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