Hi,

The chances of getting a seat in nits depend on your rank obtained in jee main exam.

Though it is difficult to predict actual rank or JEE advanced qualify marks. your expected rank can be calculated by using the formula

100 - your total percentile score is the percentage  of people ahead of you. 869010 are the number of candidates appeared for Jan exam.

So rank formula is

(100 - 87.30) X 869010 /100.

So using above formula your expected overall rank would be around  110,364

If the number of candidates for April exam increased to 1200000 then your final rank shall be around  (100 - 87.30) X 1200000/100 that is 152,400.

The college which you would expect to get depend on many factors like number of candidate applied, category, difficulty level of exam etc.etc.it varies from year to year.

However looking at the previous years cutoff trends of nit suratkal for obc category the closing cutoff ranges in between rank of 15000- 21000.

So it seems  tough for you to get a seat in both the home state qouta and other state qouta with this expected rank. You should try for the April attempt to increase your rank.

You can check the previous years cutoff with rank from the link to have more comprehensive idea.

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-surathkal

You can check the college predictor link to check other colleges for you can expect admission

JEE Main College Predictor 2020 - Predict Colleges ba ...

JEE Main College Predictor – Know your College Admission Chances Based ...

Good luck...