Which of the following reactions end in finite time?

At high pressure,the following reaction is zero order:
$2NH_{3(g)} \xrightarrow[Pt \ \text{catalyst}]{1130 \ K} N_{2(g)} + 3H_{2(g)}$
Choose the option which is not true with respect to the reaction,from the choices given below:

The rate constant of a zero-order reaction is $0.2 \ mol \ m^{-3} \ h^{-1}$. If the concentration of the reactant after $30 \ minutes$ is $0.05 \ mol \ m^{-3}$,then its initial concentration will be ....... $mol \ m^{-3}$.

For a reaction $A \rightarrow P$ at $T \text{ K}$, the half-life $(t_{1/2})$ is plotted as a function of initial concentration $[A]_0$ of $A$ as given below. The value of $x$ in the given figure is . . . . . . $\text{s}$ (Nearest integer).

Mention True $(T)$ and False $(F)$ statements for the following expressions related to a zero-order reaction $R \to P$:
$I. \ k = \frac{[R]_0}{2 t_{1/2}}$
$II. \ t_{1/2} = \frac{[R]_0}{4k}$

Time taken to complete a zero order reaction is . . . . . . .