Answer:
When a process is "listed" in a queue, the most important information stored in the list in memory are;
i. Process state: The process state is the status of a given process at a given point in time. In this case, the process state of the process in a queue is going to be waiting.
ii. Process ID: Every process has a unique identifier to distinguish it from other processes.
iii. Priority status: This gives the information of the priority level of the process over other processes that are listed in the queue.