BCA

NIMCET aspirants must have at least 60% aggregate in their Bachelor's degree with Mathematics or Statistics as a subject to stand eligible.

Business analyst is the profile, which will have no coding and would pay you high.

No, you cannot pursue B.Sc and BCA together. You will have to complete one degree then start with the other one.

Yes, any stream student with 45% in class 12th is eligible for BCA.

Class 12 passed with 40% from any stream.

No, there is entrance exam required for BCA. You can just walk into any college and get your admissions done. Few colleges like Christ, Jain might have an aptitude test. No, it's not required. But having the subject maths in your previous classes is necessary to do BCA course.

Someone who has studied BCA can join a software company or can also go for higher studies. In BCA, subjects which are included are almost similar to that of students pursuing B.Tech. India and other countries many MNCs are recruiting BCA graduates for their technical section.

At the time of admission, student has to pay INR. 17500/- with original mark sheet and original school leaving certificate.
The mentioned fees is based on minimum CEU Course fees.

Yes , you can get admission in BCA with your PCB group as maths portion is not so vast and high level as it is easy and also a scoring subject. My opinion says just go head and get admission and don't worry you will get a happy and satisfied future career ahead by choosing this field.
Best of luck.