For the reaction system:

2NO(g) + O₂(g) $$\to$$ 2NO₂(g) volume is suddenly reduce to half its value by increasing the pressure on it. If the reaction is of first order with respect to O₂ and second order with respect to NO, the rate of reaction will

For the reaction A + 2B $$\to$$ C, rate is given by R = [A] [B]² then the order of the reaction is

Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively

$$\beta$$ - particle is emitted in radioactivity by