Assertion : Oxidation number of carbon in `CH_2O` is zero.
Reason : `CH_2O`, formaldehyde, is a covalent compound.

Options

A. If both (A) and (R) are correct and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

B

Explanation

H is assigned +1 oxidation state and 0 has oxidation number-2.
`therefore` O.No. of C in `CH_2O " " ` O. No. of `C + 2 (+1) + (-2) = 0 " " therefore O . "No. of " C = 0`