Do preparing for boards help clearing JEE MAIN?

Hi there hope you are doing really well. yes preparing for board really help in JEE mains has more than 50% of the questions asked in JEE mains are from standard 12 so so if you are preparing for your boards you are covering the entire syllabus of 12 so you are going to to solve more than 50% of the paper of JEE mains. this will definitely boost up your rank in JEE mains and help you a lot for your preparation. Hope this will help you good luck.

Yes, obviously.

The syllabus of JEE main overlaps with that of Board syllabus. The topics are almost same anly the difference is of level. The level of questions asked in JEE main is a quite high when compared to that of Board. There is more of application and conceptual thinking required in case of JEE. But the topics are same, the theory remains same. Only thing you do extra is solve some extra books to increase you level of thinking. Although NCERT is recommended for both JEE main and board, there are some other books too that may be considered when preparing for JEE main. The link is attached below:

https://engineering.careers360.com/articles/best-books-for-jee-main

Hope this Helps