Amity University, Kolkata

No cutoff is required,
If you have more than 75% in PCM.

An aggregate of 50% in 12th standard is required for applying into the Bachelors Program of Amity University

Hi.
55% in 10+2 for Non Sponsored and 50% for Sponsored category.
Aggregate percentage will be calculated on the basis of marks scored in English and three academic subjects (excluding second language, Physical Education, Fine Arts, Performing Arts or any other Vocational /Non-Written subjects). Student should have passed all the subjects of class XII from a recognized board.

KIIT is the best for pursuing among the asked courses. The NIRF ranking of KIIT is 21, which is much better than Amity Kolkata.

No. Microbiology isn't available. Instead, you can go for B.Sc. Biotechnology Honours or Dual Degree in Biotechnology - which has a better scope than Microbiology.

Kolkata university is the best universities for BCA course

Amity university is better for B.Tech CSE

Yes, you can take Mass Communication at Amity University, Kolkata. Amity Kolkata is offering Mass Communication courses at the UG&PG level are given below.
1. B.A. (Journalism & Mass Communication), Eligibility: 10+2. M.A. (Journalism & Mass Communication), Eligibility: Graduation.

The fee structure for this course is Rs 3.51 lakhs.
For detail information you can download the brochure from given link
https://www.shiksha.com/university/amity-university-kolkata-46908/course-b-sc-in-economics-231540
Thanks

No dear. Don't take admission in Amity University. I am also a student of Amity University. You can check the original placement record visiting https://www.nirfindia.org/2021/Ranking.html this website.