hello,

yes,  studying NCERT books is just enough for chemistry, jee preparation.

you should read line by line in ncert to score high.to know the important topics and other details, you can refer this given link.

https://engineering.careers360.com/articles/jee-main-2019

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)