Which of the following would give a linear plot?

(k is the rate constant of an elementary reaction and T is temp. in absolute scale)

For the reaction A + B $$\to$$ C, we have the following data:

Initial concentration of A (in molarity)	Initial concentration of B (in molarity)	Rate (initial) (Relevant unit)
1	10	100
1	1	1
10	1	10

The order of the reaction with respect to A and B are

The equilibrium constant for the reaction

N₂(g) + O₂(g) $$\rightleftharpoons$$ 2NO(g) is 4 $$\times$$ 10^$$-$$4 at 2000 K. In presence of a catalyst the equilibrium is attained 10 times faster. Therefore, the equilibrium constant, in presence of the catalyst at 2000 K is

Under the same reaction conditions, initial concentration of 1.386 mol dm^$$-$$3 of a substance becomes half in 40 s and 20 s through first-order and zero-order kinetics respectively. Ratio $$\left( {{{{k_1}} \over {{k_0}}}} \right)$$ of the rate constants for first-order (k₁) and zero-order (k₀) of the reactions is