IISER Entrance Exam

Try checking the admission list of candidates by going through their official website. Also check the cutoff list to SEE your score and rank.

The eligibility criteria on its website site is given below:
Candidates must have taken at least three among Physics, Chemistry, Biology and Mathematics during their higher secondary course to be considered as from a "Science stream". So, if you are a science stream student with Computer Science, then yes, you are eligible.

The website states that the candidates must have taken at least three among Physics, Chemistry, Biology and Mathematics during their higher secondary course to be considered as from a "Science stream". So, see your subjects.

Generally, students face difficulty studying subjects they didn't have in 12th. As courses are usually easier in earlier semesters, if you learn dedicatedly, then you will get good marks. Some professors understand this issue and thus teach from the basics, so paying attention in classes would also solve many problems.

No, it's not compulsory, but you will be asked questions from all four subjects in the exam. Each subject has 45 marks in total, i.e., total marks of the test is 180 out of which around 105 marks are safe for you to get your first preference. But it's better to prepare subject you don't have (in this case Maths, as there are some basic questions which you can do with little practice).

While it's better not compare older IISERs with newer ones, according to 2022 NIRF rankings, IISER Pune, Kolkata, Mohali, and Bhopal are in the overall category. The rest are not mentioned in the overall rankings. Nature Index (overall share): Bhopal, Pune, Kolkata, TVM, Mohali, Tirupati and Berhampur. But I suggest you do not rely only on one particular ranking system as they would have one flaw or the other. Instead, you should SEE the ranking of a specific department in which you are interested, like nature. Don't forget to SEE further details.

Admissions to IISERs are from 3 channels/ways. Majorly (75 per cent) through SCB (IISER's very own aptitude test), and the rest though JEE (Adv. ). And KVPY.