Do I need to study ks verma for biomolecules and chemistry in everyday life or ncert is sufficient for jee?

Do i need to study ks verma for biomolecules and chemistry in everyday life or ncert is sufficient for jee and other entrance exams for these two chapters ?

For biomolecules it is recommended to to through NCERT and another reference book, but for chemistry in everyday life only NCERT is better.

Ok

If target is jee mains then ncert is sufficient for both

Another question i heard from some students that cbse had excluded polymers chapter in 12th boards 2020 so because of that no question was asked in jee mains January attempt is it correct?

Don't go on such assumptions or theories, if its in the syllabus it must be studied.

Ok