Colleges in Pondicherry

Yes, you can get B.Sc(Hons.) maths if you have filled PCM.

The entrance exam will be conducted once the application of the candidate is shortlisted. The exam is conducted by the university.
For details you can visit: https://www.shiksha.com/science/course/integrated-b-sc-m-sc-in-chemistry-pondicherry-university-83395

Please specify what you have done till now your qualifications and your bachelors details.

Hi, you can register and apply. Interested candidates can apply online with required information. Admission is based on the score obtained in Panjab University Common Entrance Test (PUCET).

SASTRA University is better than some NITs (some NITs does not include NIT Trichy). SASTRA University has better placements and salary packages as they have many tie ups with MNCs. They also offer Industrial exposure and Internships.
The infrastructure is also good at SASTRA University.
If you are aspiring to be a good engineer with a placement in top companies and also with a good salary then SASTRA University is a good choice.
Top 5 NITs are better than SASTRA. If you don't get a good course in those top 5 NITs then SASTRA University will be the better choice.

Hi buddy, I wouldn't say better. Infrastructure, technical support, facilities, extra curricular activities, all these aspects are similar. NITs are well established, funding support for research projects are better compared to SASTRA. I would rank them equal if not NITs bit comparatively better than SASTRA. As everyone says it's in your hands and your personal ability to make use of the best facilities and infrastructure available.
Hope this helps!

Your 12th aggregate marks should be at least 60% in order to bag admission in PU. Good luck.

Check out there official site. They have a list of requirements and find if you have one.
http://www.pondiuni.edu.in/department/department-food-science-and-technology