Dear Aspirant,

Different iims have their own criteria irrespective of your 10th and 12th. Top iims like Ahemdabad, Bangalore, Calcutta, Kozhikode, Lucknow they give weightage to your 12th results mainly. There is division of points like for 90+ there is 10 points and for 85+ there is 8 points.

So,yes there will be a difficulty for you to get into these iims as your 12th score is low and that is why you need to keep your cat percentile very high. By very high I mean atleast 99.7+ if you fall into gem category.

For eligiblility criteria, you can check out the link given below -

https://bschool.careers360.com/articles/iim-admission-criteria