As you want to get the details that will you be able to do CA and B.com simultaneously so here is the information of the same for you:

You can pursue both these courses together.

But that would mean you need to be responsible and plan your daily activities well so that both are not affected.

You could create a timetable and note all the areas.

Prepare a timetable based on it. Incase of doubts you need to clarify the same at the earliest.

You may take a look at the part papers.

This will help you understand the type of questions asked in the exams.