JEE Advanced

It depends on the person those who have scored first in that year certainly.

It is upto cut-off marks. It may be in between 80 to 110 for general and OBC. And the mandatory condition is your rank must fall under 1.5 lacs.

You should give first JEE Mains & then JEE Advanced to qualify with good marks. Mainly, criteria of eligibility for JEE Main is that open category students at least need 75% score in board exams. Also, OBC category students must have obtained 65-69% marks in board exam. So check with your eligibility firstly. Best wishes for me.

It all depends on your rank and not marks. If your rank is below 5k, then you are likely to get admitted into one of the courses for sure in IITB. Rest depends on your preference of branch. Branches like CSE and ECE have very high cut offs whereas branches like Chemical have comparatively low.

For NIT Trichy, you have to score at least 200 marks in JEE.

The questions of IPMAT are not harder than JEE. Those questions test you basic reasoning and aptitude skills. So, for someone who hasn't practiced those types of questions may seem hard.

Around 1800 rank for general category.
Around 1000 rank for OBC category.
For SC/ST category, 150-450 rank.
Good luck.

Yes, you can give JEE advance. Your board exam result date will not affect it. All the best.

ISI Demands absolute mathematics and JEE Main or advanced will focus on quite a broad array of subject. Both exam preparation have some common areas but not fully coincide. So, my suggestion is to go for either one, and do it with best of your efforts.

It's not your marks but your rank which will decide your admission in IISER. You need to have a rank below 10K to be eligible for admission in IISER. Various IISERs have different cut-offs which can demand a rank as good as 4-5K.