Copper on reaction with dilute nitric acid produces the following oxide of nitrogen
Nitrogen dioxide
Nitrous oxide
Nitric oxide
None of these
The compound responsible for the brown ring during the brown ring test of nitrate ion
Nitroso iron (II) sulphate
Iron (III) chloride
Chromium sulphate
Lead (II) chloride
Which one becomes passive in concentrated nitric acid?
Iron
Copper
Silver
Lead
Rain water contains the traces of which acid?
Nitric
Sulphuric
hydrochloric acid
amino acid
Nitric acid turns a paper soaked in potassium iodide solution brown due to liberation of
Iodine
Copper oxide
Hydrogen iodide
The __________ of nitroso ferrous sulphate decomposes on disturbing the test tube.
Black ring
Brown ring
Yellow ring
Red ring
The gaseous reactants used during Ostwald's process are
Nitrogen and oxygen
Oxygen and carbon dioxide
Chlorine and nitrogen
Ammonia and oxygen
Con. HNO3 prepared in laboratory is
Black
Red
Orange
Yellow
Nitric acid is manufactured by
Contact process
Ostwald's process
Haber's process
A metal which reacts with dilute nitric acid is
Mn
Zn
Cu
