For the reaction
2H₂(g) + 2NO(g) $$ \to $$ N₂(g) + 2H₂O(g)
the observed rate expression is, rate = K_f[NO]²[H₂]. The rate expression for the reverse reaction is :

The correct order of stability for the following alkoxides is :

In the following reaction, products (A) and (B) respectively, are :

NaOH + Cl₂ $$ \to $$ (A) + side products
(hot and conc.)

Ca(OH)₂ + Cl₂ $$ \to $$ (B) + side products (dry)

The bond order and the magnetic characteristics of CN^- are :