CBSE 12th

Yes, you are eligible. There, science field is not a barrier for you. Bachelor of Business Administration or BBA is a 3-year professional undergraduate course in Business Management, the minimum eligibility for which is class 12th from a recognized educational board with a minimum score of 50%. The course is divided into six semesters and comprises variants like BMS, BBM and BBS. It can also be done through Correspondence/ Distance mode and admission to the same is based on entrance tests carried out by different colleges and universities.
Some such entrance tests conducted by respective universities for admission into BBA course are:
IPU-CET
SET
AIMA UGAT
BBA course equips you with the right knowledge and skills in business and management and imparts knowledge of the principles which are perfect for a career in the corporate world. A degree in Business Administration solidifies your base for your future business and management career goals. Successful graduates of this course can opt for a range of jobs from sectors like finance, marketing, sales, management, government and education.
The average tuition fee charged for the course in India ranges between INR 1 lakhs to 2.5 lakhs. Some of the top institutes which provide admission to candidates into the 3-year program are as follows:
Indian Institute of Management (IIM), Indore
Christ University, Bangalore
University of Delhi
NMIMS University, Mumbai
Symbiosis International University
Guru Gobind Singh Indraprastha University, Delhi
Sikkim Manipal University

To enter the software industry, there is no hard and fast rule that you should have opted for PCM in class 12th. No, nothing like that. The only thing which you should have is your interest in learning new things. You need to be logically good. You should adapt yourselves to the changing technology quickly. Learn any object-oriented programming language. Understand the basics because that's going to be the base for any technology. Knowing a programming language will help you to become a developer. But software industry is much more than that. If you do not feel comfortable in the programming field, I have testing for you. If not that, data analyst position for you. Even if not that. You can be a database manager or a network engineer. Information security engineer. There is a whole bunch of opportunities in here. The only thing that matters is how much keen are you in learning new things. Technology is changing at an exponential rate. China is almost ready with its supercomputer. Understand and predict what is it needed. And how do we do it in more efficient manner is simple core if software industry. If you have this is in you, no matter even if you have taken commerce. You will surely succeed. God bless and good luck.

You need to have 55% in 12th for admission. You also need to appear for the entrance exam. Banasthali University, also known as Banasthali Vidyapith is a fully residential university that offers various integrated, undergraduate and postgraduate courses in multiple streams to students every year. Admission to courses offered by Banasthali Universities done on the basis of qualifying degree merit except M.Phil. B.Ed., B.Pharma M.Sc. (Biotechnology), B. Design, B.Tech, M.Tech, MBA and M.A. (Textile Designing) programme. Selection to such courses is done based on the marks secured in the university aptitude test cum Merit of the student. Admission forms will be available from April 30, 2018 and the last date for submission of the form is May 16, 2018. Submission of admission form on the last date will incur a late fee. The Aptitude test for UG courses will be held on May 28-29,2018 and the Aptitude test for PG courses will be held at the in between the month of May to June of 2018. Aptitude Test for Music courses will be based on practical Performance in which candidate should prepare one slow khyal and one fast khyal with the accompaniment of tabla and the basic theoretical knowledge of Music
A limited number of seats are available for Foreign/NRI/NRI sponsored candidates. Admission against these seats are based directly on merit and the applicants do not have to appear in the Aptitude Test. Best of luck!