A. Fe2+ + e– → Fe3+
B. 2O2- →O2 + 4e–
C. Cr – 2e– → Cr2+
D. 2H+ + 2e– → H2
Correct Answer:
Option D – 2H+ + 2e– → H2
A. Fe2+ + e– → Fe3+
B. 2O2- →O2 + 4e–
C. Cr – 2e– → Cr2+
D. 2H+ + 2e– → H2
Correct Answer:
Option D – 2H+ + 2e– → H2
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