Hi Danish Khan,
I am really confused how come institutes are offering two functioal modules along with ABAP TRAINING ??? its not that easy i beleive.
I think it might be planned just to give you a overview on SAP modules ( Both Functional & Technical) if iam not wrong.
Being a ABAPER Its good to know about the functional modules & its process, thats good idea and helps a lot in your roles.
But to learn any Functional module you may need to have at least some business knowledge in any process so that you can get into SAP Functional modules based on your domain knowledge.
That too learning functional two modules at a time, not that easy, you may need to think on this.
Just for your information most of the SAP projects will contain FI / MM / SD modules again its depends on based on the kind of business.
If you want to understand FICO module for sure you need to have some knowledge in accounts & basic concepts.
If you want to know the overview of the Functional modules & its scope :
May be you can think to know about MM- Material management ( Related with Purchasing / Inventory / logistics actvities ..etc) can refer below links to know the process atleast.
SD - Sales & Distibution.
help.sap.com
https://help.sap.com/saphelp_47x200/helpdata/en/9c/df293581dc1f79e10000009b38f889/fram
For your information pls..
Regards,
N.S.Rao