ON adding NaOH to ammonium sulphate, a colourless gas with pungent odour is evolved which forms a blue coloured complex with `Cu^(2+)` ions. Identify the gas.

On adding NaOH to ammonium sulphate, a colourless gas with pungent odour is evolved which forms a blue coloured complex with Cu^(2+) ion. Identify the gas.

On heating copper turnings with conc. H_(2)SO_(4) , a colourless gas with pungent smell is evolved which decolourises acidified KMnO_(4) solution. Identify the gas.

Ammonia (NH_(3)) is a colourless gas with a pungent odour. It can be prepared by

On adding dilute hydrochloric acid to an aqueous solution of a salt and warming, a colourless gas with pungent odour is evolved along with the formation of a yellow ppt. this indicates the presence of ….. in the salt.

On heating copper turnings with conc. HNO_(3) , a brown coloured gas is evolved which upon cooling dimerises. Identify the gas.

A colourless gas which burns with blue flame and reduces CuO to Cu is:

A colourless gas which burns with blue flame and reduces CuO to Cu is

Hydrous ferrous sulphate crystals are heated in a boiling tube for few seconds. Water droplets are seen in the inner sides of test tube and the colour of the crystals changes. On continuous heating a colourless gas X with smell of burning sulphur is evolved and a residue Y is obtained. Identify the gas X and the residue Y formed.