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JEE Main Important Chapters 2020: Topics, Chapters, Weightage & More!!

Hello Candidates, Willing to crack JEE Main entrance exam. Hold on! you are not only the one who aims to crack the JEE Main entrance exam, so what to do now? The answer is so simple you not only need to work hard but also need to work smart.

It is important to know JEE Main important chapters and the chapter-wise weightage of each chapter for JEE Main. This will ensure that you don’t miss your focus on these important chapters and topics.

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You know that if you have a complete list of the important chapters including important topics for JEE Main in your hand it will become much easier to focus on those topics. You will be able to make a proper study plan for study according to the time you have for the exam. The JEE Main important chapters include questions and topics which are frequently asked in JEE Main.

Read Also: JEE Main 2020 Application Form For April Session Date Extended

Important Links

Read Also: JEE Main Important Chapters 2020: Topics, Chapters, Weightage & More!!

Important Dates

The National Testing Agency postponed JEE (Main) April 2020 examinations scheduled on the 5th, 7th to 9th and 11th April 2020, due to COVID-19 Pandemic. The JEE Main April 2020 exam will be held from July 18 to 23, 2020.

On-line submission of Application Form: February 7,2020
Last date of fee submission: March 12, 2020, Up to 11.50 pm(through Credit/Debit Card/Net Banking/UPI and PAYTM Service up to
11.50 p.m.)
Correction in particulars: March 16, 2020(up to 11.50 p.m.)
Issue of Admit Cards: July 3rd, 2020
Date of Examination: July 18 to 23, 2020
Declaration of Result: To be Announced

Read Also: Top 3 Things To Know While Preparing JEE Main & JEE Advanced 2020

Difficulty Level

If we talk about the difficulty level of JEE Main Entrance Exam the following pie chart will show the level.

Overall Difficulty Level

jee main difficulty
[Image Credit: Manish]

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Subject Wise Difficulty Level

Subject wise
[Image Credit: Manish]

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Important Topics

As we move further let’s talk about subject wise topics which are categorised according to their difficulty level.


Let’s talk about the important topics which come under Physics section preferring according to the frequency in which they were asked in JEE Main. These topics have been carrying a consistent weightage as per the JEE Main previous year papers.


  • Electrostatics: It is a lengthy topic but is an easy topic to study. Frequently every year 3-4 questions are asked from this topic.
  • Current Electricity: It is small but with a scoring topic. Questions are asked from this topic are like the colour code of resistors, Ohm’s Law, etc. are frequently asked in the exam.
  • Electromagnetic Induction and Alternating Current: 1-2 questions are asked from these topics.
  • Semiconductor & Electronic Devices, Communication, Units & Dimensions, Measurement of error (Absolute and Relative), Instruments: Can easily score 16-20 marks from these topics.

Read Also: JEE Main Toppers 2019, 2020: know their Ranks and Percentile


  • Mechanics is the most important topic of JEE Main. We have listed some important topics in mechanics for JEE Main are:
    • Newton’s Law of Motion
    • Bernoulli’s theorem
    • Elasticity
    • Equation of Continuity
    • Kinematics
    • Fluid Mechanics
    • Work, Energy and Power
    • Rigid Body Dynamics
    • Gravitation
    • Law of conservation of momentum (linear/angular)
  • Magnetism: Normally, a good number of questions were asked from this topic.
  • Optics: This topic must be studied for the exam.
  • Modern Physics: Questions from this chapter typically were asked and average 12-16 marks you can score.
  • Most frequently asked topics are as below:
    • X-ray (Continuous wavelength, Characteristic Wavelength)
    • Atomic Structure (Spectrum/Radius)
    • Radioactivity
    • Dual Nature of Matter
    • Photoelectric Effect
    • Nuclear fission
  • Candidate must study Oscillation and Waves in detail. From this topic questions were asked related to topics like SHM, sound waves, string, Doppler effect, Wave Optics are surely asked in JEE Main each year.
  • 1-2 questions are asked every year from Thermodynamics, so you should be thorough with it as well.

Read Also: JEE Main Percentile vs Ranks: Difference you must know


Let’s talk about the important topics which come under Chemistry section preferring according to the frequency in which they were asked in JEE Main. These topics have been carrying a consistent weightage as per the JEE Main previous year papers.

In JEE Main the pattern of questions asked in Organic Chemistry is not fixed. The questions can be asked randomly therefore, all are important topics for JEE Main 2020. All the chapters carry almost equal weightage in exam. Your basics and the fundamentals should be clear in each and every topic.

Inorganic Chemistry 

  • Elements of the periodic table
  • Chemical Bonding
  • Fajan’s Rule & it’s application
  • Shape and Hybridisation
  • Molecular Orbital Theory (where the most important topic is Electronic Configuration)
  • Dipole Moment
  • Transition elements
  • coordination chemistry
  • Hydrogen
  • S & P block elements

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Physical Chemistry

  • Solutions
  • Electrochemistry & redox Reactions
  • Chemical Bonding and Molecular Structure
  • Chemical Thermodynamics
  • Equilibrium
  • Surface Chemistry
  • Chemical Kinetics


Let’s talk about the important topics which come under Mathematics section preferring according to the frequency in which they were asked in JEE Main. These topics have been carrying a consistent weightage as per the JEE Main previous year papers.

  • Sequence & Series
  • Determinants and Matrices
  • Sets and relations
  • Mathematical Reasoning
  • Statistics & Probability
  • Vector & 3D
  • Straight line
  • Circle
  • Definite Integral
  • Indefinite Integral
  • Application of Derivatives
  • Differential equation
  • Application of Integrals
  • Trigonometric Ratios

Read Also: JEE Main Guideline: JEE Main Exam day Guideline 2020

Chapters According to Weightage

From past years question papers weightage of each chapters according to subjects are given below:


The weightage of all the Physics is given below.

[Image Credit: Manish]

Read Also: How to calculate JEE Main Exam Marks and rank

Physics Chapters and Topics Average no. of questions asked from the chapter Weightage of the chapter and topic
Units, Dimensions, Errors, Experiments 2 4%
Gravitation and Rotational Mechanics 3 7%
Work, Energy & Power 1 3%
Kinematics 2 5%
Newton’s Laws of Motion and Friction 1 2%
SHM, Oscillations 1 3%
System of Particles 2 4%
Mechanical Waves and Sound 2 4%
Heat and Thermodynamics 3 10%
Current Electricity 3 7%
Properties of Matter 2 5%
Electromagnetic Induction, Alternating Current and Electromagnetic waves and Communication 3 8%
Electrostatics 3 8%
Magnetism and Magnetic effects of current 2 6%
Modern Physics 5 14%
Ray Optics, Wave Optics 3 10%

Read Also: JEE Main Result 2020: January and April Session & More!!


The weightage of chapters and topics in Chemistry which are important for JEE Main 2020 are listed below. These are based on the analysis of JEE Main previous year papers.

[Image Credit: Manish]
Chemistry Chapters and Topics Average no. of questions asked from the chapter Weightage of the chapter and topic
Inorganic Chemistry-I 10 25%
Periodic Table 1 3%
Chemical Bonding 3 8%
Complete P-Block 2 7%
Complete S-Block 1 3%
Hydrogen and its Compounds 1 1%
Environmental Chemistry 1 2%
Metallurgy 1 2%
Inorganic Chemistry-II 5 8%
Complete D-Block 1 1%
Coordination Compounds 2 4%
Qualitative Analysis 1 2%
F-Block 1 1%
Organic Chemistry-I 3 8%
GOC 2 6%
Hydrocarbon 1 2%
Organic Chemistry-II 11 22%
Carbonyl Compounds 1 1%
Carboxylic Acid and Their Derivatives 1 2%
Aromatic Hydrocarbon 1 2%
Aldehyde and Ketones 1 1%
Alkyl Halide, Alcohol & Ether 2 7%
Isomerism 1 1%
Biomolecules 1 2%
Polymer 1 3%
Practical Organic Chemistry 2 4%
Physical Chemistry-I 9 20%
Mole Concept 2 5%
Atomic Structure 1 3%
Chemical Equilibrium 1 2%
Ionic Equilibrium 2 5%
Thermodynamics & Thermochemistry 2 4%
Gaseous State 1 1%
Physical Chemistry-II 7 17%
Solid State 1 3%
Chemical Kinetics 1 3%
Surface Chemistry 2 4%
Electrochemistry 2 5%
Solution & Colligative Properties 1 3%
Total 30 100%

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There are about 30 questions in the exam from the Mathematics section in the JEE Main exam. The weightage of each of the chapters from the JEE Main Mathematics syllabus is expected as below:

[Image Credit: Manish]
Mathematics Topics and Chapters Average no. of questions asked from the chapter Weightage of the chapter and topic
Quadratics Equation 2 4%
Sequence & Series 2 6%
Trigonometry 4 6%
  • Trigonometric Ratio Identities
1 2%
  • Trigonometric Equation
1 2%
  • Inverse Trigonometric Function
1 1%
  • Height & Distance
1 1%
Differential Calculus 7 18%
  • Method of Differentiation
1 3%
  • Function
1 3%
  • Limit, Continuity & Differentiability
2 5%
  • Tangent & Normal
1 3%
  • Application of Derivatives
2 5%
Integral Calculus 4 13%
  • Indefinite Integration
1 3%
  • Definite Integration
1 3%
  • Differential Equation
1 3%
  • Area Under the Curve
1 3%
Co-Ordinate Geometry 6 14%
  • Straight Line
2 5%
  • Circle
1 3%
  • Parabola
1 2%
  • Ellipse
1 3%
  • Hyperbola
1 2%
Vector & 3d 4 10%
  • Vector
1 3%
  • 3-D
3 7%
Permutation & Combination 1 3%
Statistics & Probability   15%
  • Statistics
2 4%
  • Probability
2 5%
Complex Number 1 3%
Binomial Theorem 1 3%
Matrices & Determinants 3 7%
Mathematical Reasoning 1 3%
Mathematical Induction 0 0%
Sets & Relation 1 1%
Total 30 100%

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Other Engineering Entrance Exam

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Frequently Asked Questions:

Q. How many times is the JEE-Main exam held in a year?

A. 2 Time in a Year(January & April)

Q. How Many Times We Can Attempt JEE Main Exam?

A. No Attempt Limit

Q. What is the minimum age limit to appear in the JEE Main?

A. No age limit

Q. At what time will the forms be available on jee main official website?

A. For April- 07 April 2020(Started)

Q. What is the fee of JEE-Main Application form?

A. Boys: Rs. 650, Girls: Rs. 325/-

Q. What are the changes in JEE-Main 2020?

A. Exam Pattern: Click Here

Q. What are the Marks to qualify the Jee-Main Exam?

A. Approx 75 to 103 /360

Q. Who will conduct the Jee-Main?

A. National Test Agency (NTA)

Q. Which test series is best for JEE 2020?

A. www.www.edufever.com

Q. How to get below 1000 in 2020 jee main?

A. Min. 270+ Marks(Approx)

Q. Is JEE Main 2020 Online or offline?

A. Online but drawing paper held in offline mode

Q. Result date of JEE Main?

A. January Session-31 January 2020
April Session:- August 2020 (Tentative)

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