Hello
In order to crack any of the top NITs, you will have to appear for JEE Main and JEE Advanced exams
To know more about the JEE Exam click here: https://www.collegedekho.com/articles/last-minute-tips-and-tricks-to-crack-jee-advanced-2016-article/
Also, Physics, Chemistry and Maths are an equally important part of the paper.
Important topics in Physics:
Important topics in Chemistry:
Important topics in Maths according to weightage:
Also, do have a look at the eligibility criteria for JEE paper here: https://www.collegedekho.com/news/eligibility-criteria-for-jee-advance-4017/
To now further about top NITs in the country, click on each of the below mentioned links:
Hope this answer helps:)
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