IISER Entrance Exam

No, it's not. Please refer to the link for details: https://www.shiksha.com/science/exams/iiser-entrance-exam.

No, it is not compulsory for to be from mathematics background only. A student who took PCB, can also apply. Although the paper would be having all four sections. You may choose to leave one section, do well in others and leave the rest on the evaluation. Believe me, it worked for me and others here in IISER.

If you are from science stream, then you can apply completing class 12th.

Marking scheme: Candidates will be awarded three marks for each correct answer. There will be negative marking of one mark for each incorrect answer. Cut offs for this exam varies with different colleges, and you should wait until cut offs are declared by college authorities. IISER Entrance Exam 2018 dates are not out yet. Regards.

IISER Entrance Exam 2018 Dates: IISER Entrance Exam 2018 dates are not out yet. Tentative dates:
Online Application Starts- 4th week of May 2018
Application Closes- 4th week of June 2018
Regards.

What is your CAT score?

Yes, you are eligible to appear for KVPY next year.

Prepare and compete for the general category, stop worrying about the cut-off, try to be on the top and you will definitely get the admission.