Question

Match the compounds (in List I) with their oxidation number of N (in List II).

Answer 1

$N_2{H}_4$ oxidation number of N is-2.
$N{H}_{2}OH$ oxidation number of N is -1.
$HN{O}_2$ oxidation number of N is +3.
$N{O}_2$ oxidation number of N is +4.
$HN{O}_3$ oxidation number of N is +5.
Hence Answer: A-5, B-1, C-2, D-3, E-4.