Hello Kontham Madhavi

Yes you have to attempt both paper 1 and paper 2 in JEE Advance Exam. To make students easy and to cover the major topics in Mathematics,Physics,Chemistry they divided it into two papers.If you want to clear the JEE Advance exam you must clear the both paper1 and paper2.There is no variation in the syllabus.

Hope this will be helpful

All The Best

Hello Aspirant!

Going for attempting you should attempt both the papers in JEE Advanced Examination. Now going for how many questions to attempt , you should attempt all the non-negative questions and then attempt those question which you are fully confident on.