Which of the following is used as an electrolyte in an H2-O2 fuel cell

1.	Which of the following is used as an electrolyte in an H₂-O₂ fuel cell?
A.	KOH
B.	NH<sub>4</sub>OH
C.	Fe(OH)<sub>2</sub>
D.	Cu(OH)<sub>2</sub>
Answer» B. NH<sub>4</sub>OH

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