Galena (PbS) on heating in limited supply of air gives lead metal. This is known as

Zinc carbonate is heated strongly in a limited supply of air. Give balanced reaction.

An element which was burnt in limited supply of air to give oxide A which on treatment with water gives an acid. B. Acid B on heating gives acid C which gives yellow precipitate with AgNO_3 solution A is

An element which was burnt in limited supply of air to give oxide A which on treatment with water gives an acid. B. Acid B on heating gives acid C which gives yellow precipitate with AgNO_3 solution A is

Lead nitrate on heating gives lead oxide, nitrogen dioxide and oxygen. The reaction is known as: