JEE Main Chemistry Formulas 2026 - Topic wise Important Formulas

JEE Main Chemistry Formulas 2026 - Topic wise Important Formulas

Team Careers360Updated on 16 Jun 2025, 04:32 AM IST

JEE Main Chemistry Formulas 2026 - The Joint entrance exam is one of the most competitive exam of engineering entrance exams. It is divided into three subsections (Physics, Chemistry, Maths). In which Chemistry is an important subject for JEE Main preparation. Hence, having a list of important formulas for JEE Main Chemistry 2025 is necessary. Every aspirant should have the short notes for JEE Mains that comprise the important formulas. These JEE important formulas for Chemistry help in solving the typical problems easily. Therefore, experts of Careers360 have issued a list of JEE Main 2026 Chemistry. Download the JEE Main Chemistry Formulas E-Book below:
Download JEE Main Chemistry Formulas pdf

LiveJEE Main 2026 Registration LIVE: NTA demo link shows server error ahead of official application formOct 9, 2025 | 9:51 PM IST

JEE Main 2026 is expected to be held in two sessions. NTA holds the entrance exam in two sessions to provide the following benefits: 

  • Candidates will get two opportunities to improve their scores in the exam if they are not able to give their best in the first attempt. 
  • In the first attempt, the candidates will get a first-hand experience of taking an examination and will know their mistakes which can be improve while attempting the test for the second time. This will reduce the chances of dropping a year and the candidates would not have to waste an entire year.
  • If anyone misses the examination due to reasons beyond control (such as the board examination or health issues), then candidate can appear for the second session. 
  • A candidate is not required to take both the sessions, however, if someone appears in both the sessions, then their best NTA scores will be considered for merit list preparation.
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JEE Main Chemistry Formulas 2026 - Topic wise Important Formulas
JEE Main Chemistry Formulas 2026

JEE Main Chemistry Formulas 2026

There will be a total of 25 questions from Chemistry in JEE Main 2026, all of which have to be attempted. It is further segregated into Physical, Organic, and Inorganic sections. The maximum number of topics have been reduced from this section (chemistry) only. This makes Chemistry easier than before. However, the high-weightage topics for JEE Main remain the same.

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Below are important formulas for JEE Main 2026 Chemistry that are helpful for both sessions. Candidates should solve as many Chemistry questions as they can and implement these formulas to remember them quickly. To crack the JEE Main exam with good marks, paste these formulas near the study table and memorize them.

JEE Main 2026: Preparation Tips & Study Plan
Download the JEE Main 2026 Preparation Tips PDF to boost your exam strategy. Get expert insights on managing study material, focusing on key topics and high-weightage chapters.
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Most Important JEE Main Chemistry Formulas 2026

  • Atomic Structure

  • Redox Reaction and Electrochemistry

  • Chemical Thermodynamics

  • Coordination Compounds

  • d - and f - BLOCK ELEMENTS

  • GOC isomerism

  • Solutions

  • Alkyl halides and aryl halides

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JEE Main Important Physics formulas

As per latest syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters

Most Important Formulas for JEE Chemistry

$$
\begin{aligned}
& \mathrm{c}=\frac{\text { distance }}{\text { time }}=\frac{\text { Wavelength }}{\text { Time Period }}=\frac{\lambda}{\mathrm{T}} \\
& \because \nu=\frac{1}{\mathrm{~T}} \\
& \therefore \mathrm{c}=\nu \times \lambda
\end{aligned}
$$

(i) Work done in reversible isothermal process

$$
\begin{aligned}
& \mathrm{W}=-2.303 \mathrm{nRT} \log _{10} \frac{\mathrm{~V}_2}{\mathrm{~V}_1} \\
& \mathrm{~W}=-2.303 \mathrm{nRT} \log _{10} \frac{\mathrm{P}_1}{\mathrm{P}_2}
\end{aligned}
$$

(ii) Work done in irreversible isothermal process

Work $=-\mathrm{P}_{\text {ext. }}\left(\mathrm{V}_2-\mathrm{V}_1\right)$
That is, Work $=-\mathrm{P} \times \Delta \mathrm{V}$
At $\mathrm{T}=298 \mathrm{~K}$, Nernst equation is given as follows:

$$
\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^{\circ}-\frac{0.059}{\mathrm{n}} \log _{10} \mathrm{Q}
$$


Mass by Volume $\%$ of a component $=\frac{\text { Mass of the component }}{\text { Total volume of solution }} \times 100$

Frequently Asked Questions (FAQs)

Q: What is the JEE Mains ?
A:

JEE Main is an exam conducted for those aspirants who want to take admission in NIITs, IITs and other engineering colleges, and it is also an eligibility test for JEE advance.

Q: Which part of chemistry has many formulas ?
A:

Chemistry has three subparts (Physical, inorganic and organic). Physical chemistry has many numericals based on different formulas.

Q: Is the class 12 syllabus important for the JEE Main Exam ?
A:

Yes, Class 12 syllabus carries more than 50% of weightage, so it is important for JEE Main Exam.

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Questions related to JEE Main

On Question asked by student community

Have a question related to JEE Main ?

Hello,

To prepare for the JEE paper 2 or the Architecture exam, you need to understand the exam pattern and syllabus clearly. Then strengthen the fundamental concepts with daily revision. After that, take a mock test and practice with the PYQ to get the exam-like experience.

I hope it will clear your query!!

JEE Main exam is a national-level entrance test for admission into top engineering colleges like NITs, IIITs, and GFTIs. It mainly tests your understanding of Physics, Chemistry, and Mathematics. To prepare well, focus on NCERT books first, then refer to standard JEE preparation books for deeper concepts and practice. Regular mock tests and solving previous year papers also help in improving speed and accuracy. I’ll be attaching some useful JEE Main preparation links from Careers360 to help you get started.
https://engineering.careers360.com/articles/best-books-for-jee-main
https://engineering.careers360.com/articles/best-study-material-for-jee-main
https://learn.careers360.com/engineering/jee-main-preparation-material/



Hello,

Generally an income certificate isn't required for the JEE Main registration, but if you want to claim the EWS quota, then you need this. You must provide the certificate, issued by a government authority, as proof of your family's income being below the specified limit for the reservation category you wish to apply under.

I hope it will clear your query!!

Yes, as JEE does accepts improvement examination scores, so you must go for it but most of the state boards have already conducted or are conducting their 2025 improvement exams. If you have already given your improvement that's fine. If you have not given improvement this year then you can take your improvement next year.

Thank You.

Hello,

Yes, you can prepare for and take the JEE Main exam after completing your intermediate (12th year) exams. This is a common path for students who want to dedicate a year to intensive preparation without the pressure of simultaneous board exams.

I hope it will clear your query!!