M.Sc Chemistry

Hi,
In which college have you applied? I don't think so that now there will be an option to make changes. I would request you contact the college in which you have applied and seek help from the officials.

Yes, you can appear TUEEE for M.Sc in chemistry. For this biology is not mandatory.

Yes, last year student pursuing B.Sc can give PU-CET. Forms are out on PU website today. You can check.

Top M.Sc. Entrance Exams in India are mentioned at the link provided below. https://www.shiksha.com/science/articles/top-bsc-msc-entrance-exams-in-india-blogId-13484
How to prepare for top M.Sc. Entrance exams? https://www.shiksha.com/science/articles/how-to-prepare-for-top-msc-entrance-exams-blogId-13489.

Check the eligibility criteria from the link below :
https://www.shiksha.com/science/course/m-sc-in-chemistry-national-institute-of-technology-tiruchirappalli-113118

Overall it is perfect but Placement and job opportunities depend on the individuals performance. They by themselves recruit the capable students for their company by the placement cell organized by the college faculty members. The top companies come to the college and take exams and GD and all their criteria depends on the company to company.