This video lecture from Group VA and Group VIA Elements (F.Sc. second year Chemistry) covers the structure and preparation of nitric oxide or simply nitrogen oxide. Nitric oxide can be prepared by the action of dilute nitric acid on copper metal analogous to the preparation of nitrous oxide using zinc metal. Furthermore, it may also be prepared by passing air through an electric arc. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.