CBSE 12th

At least, 50% is a must. NATA asks for a minimum of 40% to answer the entrance exam.

Well, there maybe a college like the one you've asked but mostly, in fact in every college, entrance exam is a must. That is another thing if one does't qualifies the entrance and gets admission through donation.

Yes, you can join pharma.D.

Well, Ishaan, 12th standard grades are important but if you are seeking a good job, that too with such a high package, you need to have a graduation degree with a good aggregate. There are jobs for students who are intermediate passed and have no graduation degree but, in these jobs, no such high package is expected or given.

That's a good rank to expect admission in one of the NIFTs, if you are not from the general category.

That will only affect the shortlisting criteria of companies as some companies demand 60%, 60%, and 60% in class 10th, 12th and graduation. Rest if you cross that it will be your skills and expertise that will bag you the package.

You can go for CA CS BBA BMS, B.Com (Hons) and many others. What matters is from which college you did.

Yes, you can get a college for microbiology from NRI Quota.

Best Courses After 12th for Science Students with PCM, PCB and PCMB are mentioned at the link provided below:
https://www.shiksha.com/courses-after-12th/science.

It affects at some percent like 2-6% each 10 and 12.