The unit of rate constant for a zero order reaction is

Mention True $(T)$ and False $(F)$ statements for the following expressions related to a zero-order reaction $R \to P$:
$(i) \ k = \frac{[R]_0 - [R]}{t}$
$(ii) \ k = \frac{[R] - [R]_0}{t}$

The decomposition of $NH_3$ on $Pt$ surface is a zero order reaction. If the value of rate constant is $2 \times 10^{-4} \ mol \ L^{-1} \ s^{-1}$,the rates of appearance of $N_2$ and $H_2$ are respectively:

Half life of zero order reaction $A \rightarrow \text{product}$ is $1 \ \text{hour}$,when initial concentration of reactant is $2.0 \ \text{mol L}^{-1}$. The time required to decrease concentration of $A$ from $0.50$ to $0.25 \ \text{mol L}^{-1}$ is:

Which of the following are the correct representations of a zero order reaction,where $[A]$ represents the reactant concentration and $[A]_0$ represents the initial concentration?

What is the unit for the zero order rate constant?