Dear Reader,

It isn't possible at all for you as the syllabus are vast so per chapter 50 to 60 questions doesn't guranteed your selection.If you want to solve questions relevant then pick questions from topic wise rather than chapter wise like for chemistry solve most of the questions from  S, P, D, F block, chemistry in everyday life, polymer, environmental chemistry, bio molecule and conversions in organic chemistry as these chapters are mostly memory based and may be come in upcoming exam.

From physics study, modern physics, waves and heat,optics and thermodynamics as these chapters do not require much of early knowledge of past chapters and mostly likely to come.

From maths study matrices, application of derivatives, sequence and series,probability and co-ordinate geometry full unit as they carry healthy marks for mains exam.

Remember to solve questions from chapters-wise previous years papers while studying these chapters so that you get an idea of what type of questions would be asked and also aware of it's solution.

I hope this answer helps to resolve your query.

All the best.