Question

In which of the following reactions, the underlined substance has been reduced?

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

Answer 2

: $\overset{+ 1}{H_{2}}O \rightarrow \overset{0}{H_{2}}$

Oxidation number of H decrease from +1 to 0 Hence $H_{2}O$ is reduced to $H_{2}$