For a zero-order reaction with rate constant $k$,the slope of the plot of reactant concentration against time is

$A$ zero-order reaction,$A \rightarrow \text{Product}$,with an initial concentration $[A]_0$ has a half-life of $0.2 \ s$. If one starts with the concentration $2[A]_0$,then the half-life is $.... \ s$

Half life of a zero order reaction is directly proportional to $\qquad$

The time required for $100 \%$ completion of a zero order reaction is

$A$ reaction $2A \to$ products is found to follow zero order kinetics,then

The rate of a certain reaction depends on concentration according to the equation $-dc/dt = (K_1 C) / (1 + K_2 C)$. What is the order when concentration $(C)$ is very high?