The oxidation number of C in $C H_{2} O$ is
(IIT-JEE, 1983)

-2

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Solution

The correct option is C \N
Oxidation number of oxygen is -2, hydrogen is +1 since there is no metal bond with the hydrogen. If $x$ is the oxidation number of $C$ , then:
$C H_{2} O : x + 2 - 2 = 0 \Rightarrow x = 0$

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