Hello Suken,

I would suggest you to prepare as per the syllabus of the exam. You can check the complete syllabus of the Exam to go through with the given below link.

https://engineering.careers360.com/articles/jee-main-syllabus

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Hi Suken,

As of now syllabus of JEE Main and JEE Advanced 2020 hasn't been released yet. And now since CBSE is not making question paper, I would suggest you to not leave it for the end. It's an easy chapter and requires a little bit of time. Below is the link for the official syllabus of JEE MAIN 2019, refer to it in case of any doubt:

https://jeemain.nic.in/WebInfo/Handler/FileHandler.ashx?i=File&ii=33&iii=Y

All  the best