Hi

To be honest if you start your preparation from scratch in just 20 days then it is very difficult to qualify JEE main examination but  if your basics of 10 + 2 is clear then you can qualify it, but you need to really work hard now.

Also, now that , very limited time is there you need to do smart study ,so  stress on  important topics or chapters which are listed below based on their weightage in past year JEE mains examination :-

PHYSICS

• *Modern Physics -20 marks

• *Heat and Thermodynamics-12 marks

• *Optics - 12 marks

• *Current Electricity- 12 marks

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• *Electrostatics- 12 marks

• *Magnetics- 8 marks

CHEMISTRY

• *Transition Elements and Coordination Chemistry- 12 marks

• *Periodic table and Representative Elements- 12 marks

• *Thermodynamics And Gaseous State- 8 marks

• *Atomic Structure- 8 marks

• *Chemical Bonding - 8 marks

• *Chemical And Ionic Equilibrium - 8 marks

• *Solid State And Surface Chemistry - 8 marks

• *Nuclear Chemistry And Environment - 8 marks

MATHEMATICS

• *Coordinate Geometry-20 marks

• *Limits, Continuity and Differentiability-12 marks

• *Integral Calculus:- 12 marks

• *Complex numbers and Quadratic Equation :- 8 marks

• *Matrices and Determinants:- 8 marks

• *Statistics and Probability:- 8 marks

• *Three Dimensional Geometry:- 8 marks

• *Vector Algebra:- 8 marks

For chapterwise weightage checkout:- https://engineering.careers360.com/articles/jee-main-syllabus-weightage/amp

************ Follow a routine, give at least 10-12 hours a day towards your preparation

************Solve previous year JEE MAINS questions , it will let you know the examination pattern, type question etc so that you can prepare accordingly. You can get them at https://engineering.careers360.com/articles/jee-main-question-papers/amp

************Go through JEE MAINS mock test papers , it will let you know your preparation level and and weak areas so that you can work on them and perform well in your examination. You can get them at https://learn.careers360.com/test-series-jee-main-free-mock-test/

To help you in your jee main preparation, careers360 brings to you JEE main crash course having all the features required to ace your preparation like smart study materials, video lectures, doubt clearing facility, mock test series etc. The link for the same is given below:-

https://engineering.careers360.com/articles/careers360-jee-main-crash-course

Thank you