Hi , Every part of Chemistry -Physical , Inorganic and Organic has its own importance. But you can expect more problems on Organic in JEE Advanced. There are less weightage of inorganic chemistry in JEE .you have to study inorganic chemistry line by line from NCERT chemistry book to secure a decent score in the JEE Main Examination while you have to refer some extra materials or notes other than NCERT to get good score in Advanced in this section.. Byjus notes and video lectures will help a lot in this.
Happy learning at Byjus! Have a great career ahead