hi ujjwal ,

Students will get questions from all important topics like Application Of  Derivatives, Vector, Limits, 3-Dimensional Geometry, Definite Integrals, Area Under Curve, Trigonometric Equations, Indefinite Integrals, Probability, Straight Lines, Circle, Complex Numbers, Height & Distance, Statistics, Binomial Theorem, Hyperbola, Permutation & Combination, Determinants and Matrix, Sets & Relations, Parabola, Differentiability, Mathematical Reasoning, Differential Equations, Sets & Relations, Progression & Series.

Questions are taken from important topics like some basic concepts in chemistry, states of matter, atomic structure, chemical bonding and molecular structure, chemical thermodynamics, solutions, equilibrium, redox reactions and electrochemistry, chemical kinetics, surface chemistry, purification and characterisation of organic compounds, d- f,p block.

All the aspirants need to keep a track of their preparedness by practicing more and more questions based on each important topic for JEE Main test. Students can download the complete collection of the questions in the PDF form with the help of the link given at the end of this article.

you should also have a look at this https://jeemainonline.in/important-topics-jee-main-advanced-syllabus-weightage/ . this helped me alot

you can find some of the main questions here: https://www.jagranjosh.com/articles/most-important-maths-solved-questions-for-jee-main-1543913932-1

https://www.jagranjosh.com/articles/most-important-chemistry-solved-questions-for-jee-main-1544434164-1

hope it helped!