Physics: These 3 are the most basic concepts that you ought to know. You can expect at-least 1 question from these topics: Units and Dimensions – Weightage: 2%Measurement of Errors – Weightage: 2%VectorsThese topics are classified as fundamentals in physics. You can expect 1 – 2 questions from this section on an actual JEE Paper. Kinematics – Weightage: 1%Newton’s Laws of Motion – Weightage: 4%FrictionThese 5 topics are important easy and can help your score high marks very easily in the JEE: Work, Energy and Power – Weightage: 5%Electrostatics – Weightage: 6%Current Electricity – Weightage: 7%Wave Optics – Weightage: 5%Ray Optics – Weightage: 6%These 9 topics are absolutely important for JEE. You can expect twisted questions from these sections, so its very important you know your basics well and you practice alot. You can expect 2 – 3 questions from most of the topics listed below. Centre of Mass, Momentum and Collision – Weightage: 5%Rotational Dynamics – Weightage: 4%Simple Harmonic Motion – Weightage: 5%Fluid Mechanics – Weightage: 2 – 5%. Bernoulli’s principle can be easily twisted to ask some tricky questions.Wave Motion and String Waves – Weightage: 5%Magnetism – Weightage: 6%Heat Thermodynamics – Weightage: 6%. This is one topic that is very important for both Physics and Chemistry preparation in JEE.Nuclear Physics – Weightage: 5%Modern Physics – Weightage: 5%And finally, here is a list of the topics that you should study atleast once and try to create cheat-sheets or flashcards to help your revise the formulas. You can expect 3 – 4 questions mix and match from the topics below. Circular Motion – Weightage: 1%Gravitation – Weightage: 1%Properties of Matter, Elasticity – Weightage: 2%Sound WavesElectromagnetic Induction – Weightage: 3%Alternating Current – Weightage: 1%Heat TransferCalorimetryThermal ExpansionThermo ElectricitySemiconductors and Electronic Devices – Weightage: 5%Communication Systems – Weightage: 2%By average Number of questions asked in past JEE Main / Advanced Physics papers: Current Electricity: 8 questions asked on the actual JEE paper each year on an averageElectrostatics: 4 questionsOptics: 3 questionsHeat and Thermodynamics: 2 questionsLaw of Motion: 2 questionsWaves: 2 questionsSimple Harmonic Motion: 2 questionsYou can expect some more questions (mix and match) from the other topics in the syllabus. Mathematics: Mathematics is the foundation of complex engineering calculations. You must make your Math fundas strong if you want to pursue any engineering field out there be it Computer Science or Mechanical Engineering. One thing you must understand early on is that Math is one subject where you can master yourself only by more and more practice. Remember “Practice makes the man perfect.” These topics have been classified as fundamentals in Maths. You can expect 1 – 2 questions from these topics in the Maths section on your JEE paper. Inverse Trigonometric Functions – Weightage: 2%Circles and Family of Circles – Weightage: 6%Sequence and Series – Weightage: 5%These 4 topics are important easy and you should use them to your advantage to increase your JEE Math scores. Do not do silly mistakes from questions in these sections. Applications of Derivative – Weightage: 4%Limit and Continuity – Weightage: 3%Matrices and Determinants – Weightage: 4%Straight Lines and Pair of Straight Lines – Weightage: 2%These 7 topics are absolutely important for JEE Maths. As it is, you can expect questions of varied difficulty from the topics in this section. For JEE Main 2017, 2 – 3 questions from most of the topics listed below are expected on the paper. 3-D Geometry – Weightage: 5% Questions from this topic are generally straight forward so you can solve them easily by reading the questions properly.Probability and Statistics – Weightage: 7%.Vector Algebra – Weightage: 5%Integration – Weightage: 8% (Definite + Indefinite integration)Complex Numbers – Weightage: 5%Parabola – Weightage: 3%Trigonometric Ratios – Weightage: 3%And finally, here is a list of the topics that you should study atleast once and try to create cheat-sheets or flashcards to help your revise the formulas. You can expect 3 – 4 questions mix and match from the topics below. Logarithms – Weightage: 1%Quadratic EquationsTheory of Equations – Weightage: 5%Sets, Relations and Functions – Weightage: 4%Differentiation – Weightage: 2%Permutation and Combination – Weightage: 2%. You should study this properly as concepts from this section will be needed in ProbabiltyBinomial Theorem – Weightage: 1%LocusHyperbola – Weightage: 2%Ellipse – Weightage: 2%Fundamentals of MathematicsSolution of Triangle – Weightage: 1%By average Number of questions asked in previous year JEE Main / Advanced Maths papers: Coordinate Geometry – 7 Questions were asked on an average every year in the JEEContinuity/ Differentiability, Limits – 3 QuestionsComplex No., Quadratic Equation – 3 Questions eachIntegral Calculus – 3 QuestionsSequence and Series – 2 QuestionsTrigonometry – 2 QuestionsChemistry : Here is a brief overview of the important topics in Chemistry: Chemical Bonding the periodic table – This is by far the most fundamental and the most important topics in Chemistry. If you can master Chemical Bonding and the properties of periodic table elements, then Chemistry will be an easy subject for you over many years to come.Carbonyl Compounds their derivativesRedox reactions, Mole Concept the concept of equivalentsSolid state, solutions gases theoryThermochemistry the Second Law of ThermodynamicsList of important Topics in Chemistry for JEE 2017 By Syllabus Weightage Fundamental Concepts: IUPAC NomenclaturePeriodic TableChemical Bonding – Weightage: 5%. Like I mentioned earlier, Chemical Bonding and periodic table is one of the strongest pillars of your Chemistry conceptual understanding. You can easily get top ranks by making sure your concepts are crystal clear in this topic.Important, and you can score high marks eas

Dear Pavan,

Chemistry for jee mains can be mostly covered using NCERTs. As far ''Easiest topics" in chemistry is concerned, Polymers & Biomolecules, S&P block elements, Hydrocarbons, Physical Chemistry chapters are very scoring topics. Hence, if you prepare well for the basic chapters (i.e. first chapters) of each of Physical, Organic and Inorganic Chemistry, then you will be able to get good marks. Figure out which section of chemistry you are good at and then prepare the basic chapters of that. Jee Mains doesn't go into detailed study. You need clear concepts to ace the exam. Best Wishes!

Surface Chemistry, Solution, Periodic Table and many more.