A colour less oxide of nitrogen in air becomes brown. Why? 

Name the oxide of nitrogen which is a brown gas.

Assertion : Lead is a metal with a high density . It readily dissolves in moderately concentrated nitric acid giving colourless fumes which turn red in contact with air . Reason : Nitric oxide (NO) is a colourless oxide of nitrogen while NO_(2) is coloured oxide of nitrogen .

The most stable oxides of nitrogen will be :

Which oxide of nitrogen is neutral ?

Is there any coloured oxide of hitrogen ?

Which oxide of nitrogen is coloured gas?

The oxidation state of nitrogen varies from:

Which oxide of nitrogen is not common pollutant ?

Which of the following oxides of nitrogen is a coloured gas ?

Name the oxides of nitrogen causing pollution .