Name the one gas which gives dense white fumes with ammonia.
A gas 'P' gives dense white fumes with chlorine. Its aqueous solution gives a blue colour with copper (II) hydroxide. (a) Name the gas P. (b) Give its formula. (c) Give three uses of P.
When sodium chloride reacts with sulfuric acid, a gas is evolved which gives dense white fumes with ammonia. Which gas is evolved?