For the non – stoichiometre reaction 2A + B $$\to$$ C + D, the following kinetic data were obtained in three separate experiments, all at 298 K. The rate law for the formation of C is:

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is :

Among the following oxoacids, the correct decreasing order of acid strength is :

Which one of the following properties is not shown by NO?