Order of a reaction is decided by

For a certain reaction, $10\%$ of the reactant dissociates in $1\, hour$, $20\%$ of the reactant dissociate in $2\, hour$, $30\%$ of the reactant dissociates in $3\, hour$. Then the units of rate constant is

For the reaction system $2NO(g) + {O_2}(g) \to 2N{O_2}(g)$ volume is suddenly produced to half its value by increasing the pressure on it. If the reaction is of first order with respect to $O_2$ and second order with respect to $NO,$ the rate of reaction will

Which of the following rate laws has an overall order of $0.5$  for reaction involving substances $x$, $y$ and $z$

The reaction $2{H_2}{O_2} \to 2{H_2}O + {O_2}$ is a

For a reaction $2NO(g) + C{l_2}(g)$ $\rightleftharpoons$ $\,2NOCl(g)$. When concentration of $C{l_2}$ is doubled, the rate of reaction becomes two times of the original. When the concentration of $NO$  is doubled the rate becomes four times. What is the order of the reaction