CBSE 12th

BIPC students are eligible to pursue BBA. Most of the BBA institutes conduct their own entrance examination for admission. You may visit the website of the targeted institutes for the detailed selection process.

First, you should concentrate on your class 12th board studies and register yourself with ICAI. If your foundation in maths and accounting is strong then you can easily qualify the examination for CA after completing 12th.
All the best.

You need to score a minimum of 75 percent marks in class 12th to appear for JEE Mains exam.

According to me, you should opt for the improvement. I understand it will put another year of your career at stake, but it will be good for you. Though you might get admission in an engineering college and will surely score good marks, but it will create a big trouble at the time of placements.
Most of the companies demand a minimum of 65 percent in class 12th. If you take admission with your current percentage, you won't be eligible for quite a number of job interviews. Therefore, you should opt for the improvement exam.

One should be careful while opting for a course after completing class 12th as it is a very tough decision for both the student and parents, but if a student opts for the course of his/her liking then it becomes quite easy to choose a correct option. A student with PCB can also pursue MBA. One should consider other unique and different courses apart from the mainstream courses such as B.Pharm, Bachelor of Science, B.Sc in agriculture, etc.
You can pursue any of the following courses from IIT, University of Delhi, UPES, etc.

There are many courses available for students after completing 12th. Courses like engineering and MBBS are the mainstream options, but you can also focus on unknown and unique courses. You can opt for courses like informatics, aviation, aerospace, mechanical, etc.
You can pursue any of the above-mentioned courses from the following colleges:
1. IIT
2. VIT
3. BITS, Pilani
4. UPES
5. University of Delhi

Choosing the right course after completing class 12 is extremely important for students. It is also a difficult decision because there are so many good options available these days. Some of the courses you can opt for after completing class 12th in PCM are B.Tech in computer science and engineering, information technology, aerospace engineering or automobile engineering, Bachelor's in architecture, chemical engineering, etc. All the courses have their own demand in the industry if done from a reputed college like IIT, VIT, UPES, BITS, Pilani, etc.

Merchant navy, 5 years integrated law degree from NKUs, integrated MBA from IIM - Indore, fashion designing from NIFT are other high income career options, which you can consider.

If she is interested in government jobs, then I would suggest you to get her enrolled in a graduation program and ask her to start the preparation for UPSC exam. She can also do law, if she is interested because she can later become a judge of district and high courts.

First of all a very warm congratulations to you for scoring so good.Now coming back to your question, you are eligible to take admission in any reputed institute of the country which has a cut off list of such percentile.Also you have done your bachelor's in mechanical so there is a good scope for you to get a good institution a bright future is waiting. All the best for future.