According, to the students section of Mathematics was easy, Chemistry was more conceptual and Physics was tricky.

The exam was overall tough and objective. Chemistry was difficult, Mathematics and Physics were of moderate difficulty. 12th standard syllabus had more weightage in the exam. Conic section from Mathematics and the Mechanical section from Physics had more questions.

Some students claimed that paper was easy from last year.

To check the complete information you can refer below link

JEE Advanced Exam Analysis 2017

Good Luck!!