Hi Animesh 

BCom Hons is a 3 year undergraduate course. Admission to BCom Hons requires mathematics as a compulsory subject in 12th.

It give you in depth analysis of commerce and it's different areas. You can specialise in Accounting or Economics.

Cut off for BCom Hons for various colleges are relatively high.

If we talk about BCom Hons and BBA , then both are good. 

In BBA, if you wish to make your career in Management sector. 

Topics you'll cover in BBA are Finance, operation management, IT, marketing etc .

Also, it offers in depth knowledge in Business and management.

Whereas, BCom Hons is also mainly opted by commerce students .

Subjects you'll study in BCom Hons : Accounting, finance , General Business principles, law etc. 

If you want to make your career in Accountancy, Finance, Economics, Taxation etc .

BCom Hons gives both practical as well as theroetical. It includes subjects like:

Mathematics 

Accountancy 

Financial accounting 

Cost accounting  

Taxation

Economics

CMA 

Auditing 

All The Best!!