Mole Concept carries approximately 2-3% weightage under the JEE Advanced 2025 exam according to the new JEE Advanced 2025 syllabus and previous years trends. The subject is considered moderate as per conceptual depth. Common concepts such as Mole Fraction, Molarity, Molality, and Stoichiometry are repeatedly asked in JEE Advanced previous year question papers. Hence, revising these core concepts is highly recommended for good exam performance.
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- Download JEE Advanced Last 10 year PYQ for Free
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Most important Topics for JEE Advanced 2025 (Mole Concept):
Based on the JEE Advanced previous year paper trends, the following are the high-weightage topics in JEE Advanced 2025:
- Mole Fraction and Percentage Composition (JEE Advanced 2020, Paper 2)
- Molarity and Molality Calculations (JEE Advanced 2021, Paper 1)
- Stoichiometry and Limiting Reagent (JEE Advanced 2019, Paper 1)
- Equivalent Weight and Normality (JEE Advanced 2018, Paper 2)
- Gas Laws and Avogadro’s Hypothesis (JEE Advanced 2021, Paper 1)
- Empirical and Molecular Formula Determination (JEE Advanced 2020, Paper 1)
JEE Advanced previous year question papers and mock tests can assist IIT Aspirants to achieve higher rankings in JEE Advanced 2025.
Listed below the most repeated questions JEE Advanced Previous Year Questions (PYQs) for Mole Concept along with detailed solutions
P → (i) NaOH → Q
(ii) CO₂
(iii) H₃O⁺
Q → (i) (CH₃CO)₂O → R
(ii) H₃O⁺
R → S
The correct statement about S is
(Image of reaction scheme)
The correct statement(s) about P, Q, R, and S is(are)
JEE Advanced 2025 Chapter-Wise Weightage For Chemistry
| Chapter Name | Approx. Weightage (%) | No. of Expected Questions |
|---|---|---|
| Chemical Thermodynamics | 6–8% | 2 |
| Atomic Structure | 5% | 1–2 |
| Chemical Bonding & Molecular Structure | 6–7% | 2 |
| Equilibrium (Ionic + Chemical) | 7–9% | 2–3 |
| Electrochemistry | 5–6% | 1–2 |
| Solutions & Colligative Properties | 4–5% | 1–2 |
| Redox Reactions | 3% | 1 |
| Surface Chemistry | 3% | 1 |
| Solid State | 3–4% | 1 |
| Kinetics | 5–6% | 1–2 |
| Organic Chemistry (General + Named Reactions) | 12–14% | 4–5 |
| Biomolecules, Polymers, Chemistry in Everyday Life | 4–5% | 1–2 |
| Coordination Compounds | 6–7% | 2 |
| The d- and f-Block Elements | 5% | 1–2 |
| Qualitative Inorganic Analysis | 4% | 1 |
JEE Advanced 2025 Difficulty Analysis For Chemistry
| Chapter Name | Difficulty Level (Easy / Moderate / Hard) |
|---|---|
| Chemical Thermodynamics | Moderate to Hard |
| Atomic Structure | Moderate |
| Chemical Bonding | Moderate |
| Equilibrium | Hard |
| Electrochemistry | Hard |
| Solutions | Moderate |
| Redox Reactions | Easy |
| Surface Chemistry | Easy |
| Solid State | Moderate |
| Chemical Kinetics | Moderate |
| Organic Chemistry (Full) | Moderate to Hard |
| Biomolecules & Polymers | Easy |
| Coordination Compounds | Hard |
| d- and f-Block Elements | Moderate |
| Inorganic Qualitative Analysis | Hard |
Download Last 10 years JEE Advanced Previous Year Question Papers (2024 - 2016)
IIIT JEE Advanced Previous Year Question Papers
You can download free IIT JEE Advanced Previous Year Question Paper PDFs from the table provided below:-
| JEE Advanced Paper Name | Question Paper Link |
| JEE Advanced 2024 Question Paper PDF | Click Here |
| JEE Advanced 2023 Question Paper PDF | Click Here |
| JEE Advanced 2022 Question Paper PDF | Click Here |
| JEE Advanced 2021 Question Paper PDF | Click Here |
| JEE Advanced 2020 Question Paper PDF | Click Here |
| JEE Advanced 2019 Question Paper PDF | Click Here |
| JEE Advanced 2018 Question Paper PDF | Click Here |
| JEE Advanced 2017 Question Paper PDF | Click Here |
| JEE Advanced 2016 Question Paper PDF | Click Here |
Frequently Asked Questions:-
1. What is the weightage of Mole Concept in JEE Advanced?
Mole Concept has a weightage of approximately 2-3% in the JEE Advanced 2025 exam as per the new syllabus and previous trends. Hence, 1 or 2 questions can be come in Paper 1 or Paper 2. Concepts like Molarity, Molality, Stoichiometry, and Limiting Reagent are typically questioned, hence it's a small but scoring segment. Practice these concepts well to get those marks without any effort.
2. Which IIT sets the toughest paper for JEE Advanced?
It is difficult to say which IIT will give the toughest paper since the task alternates every year. According to trends, IIT Bombay and IIT Delhi usually set difficult papers, particularly in Mathematics and Physical Chemistry. For example, the IIT Guwahati 2023 paper was found to be difficult because of complex questions on Organic Chemistry and Coordinate Geometry. So it's better to do preparation by solving previous year papers (PYQs) and taking mock tests on a regular basis. This would facilitate adaptation to any level of toughness irrespective of which IIT is conducting the paper.
3. Can I qualify for JEE Advanced with 93 percentile?
A 93 percentile is an okay score for JEE Mains, but JEE Advanced qualification is based on the cut-off, and that varies year to year. To explain, as of 2024, the cut-off for the General category was around 89-91 percentile, so 93 percentile would be qualifying but for safety, especially for the General category, it's better to aim for as high a percentile as 95 and above. Visit the NTA official website for the exact cut-off again and again and focus on revision and mock tests for improving the score if necessary.
4. Is the Mole Concept hard?
The Mole Concept isn't that tough unless the concepts are not very clear. It's generally a middle-level topic in JEE Advanced. Questions are generally from topics like Mole Fraction, Molarity, Molality, and Limiting Reader, which are hard initially but simple after practice. Start with NCERT to form a solid base, and then solve previous year questions (PYQs) and mock tests to gain confidence. For better understanding, online lectures on platforms like YouTube can be helpful. As it's a scoring subject, ensure to practice it properly.
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