Give any one example to show the negative oxidation state of nitrogen. 

The oxidation state of nitrogen varies from:

The oxidation state of nitrogen is highest in

Give one example of each Negative catalyst

Fe show on oxidation state of +1 in:

Give any two examples of mesophytes.

The lowest possible oxidation state of nitrogen is ........

Which one of the following elements shows both positive and negative oxidation states?

Name two oxoacids of nitrogen and write the oxidation state of nitrogen in each case.

One mole of N_(2)H_(4) loses ten moles of electrons to form a new compound A . Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in A ? (There is no change in the oxidation state of hydrogen.)

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen ?