Solid State 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 Crystal Lattices, Defects in Solids, and Packing Efficiency are repeatedly asked in JEE Advanced previous year question papers. Hence, revising these core concepts is highly recommended for good exam performance.
Must Read Articles:
- Download JEE Advanced Last 10 year PYQ for Free
- Download JEE 2024 Question Paper with Detailed Solutions
Most important Topics for JEE Advanced 2025 (Solid State):
Based on the JEE Advanced previous year paper trends, the following are the high-weightage topics in JEE Advanced 2025:
- Crystal Lattices and Unit Cells (JEE Advanced 2020, Paper 2)
- Types of Solids (Ionic, Covalent, Molecular, and Metallic) (JEE Advanced 2021, Paper 1)
- Defects in Solids (Point Defects, Line Defects, and Planar Defects) (JEE Advanced 2019, Paper 1)
- Band Theory of Solids (JEE Advanced 2018, Paper 2)
- Electrical and Magnetic Properties of Solids (JEE Advanced 2021, Paper 1)
- Calculation of Density and Packing Efficiency (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 Solid State along with detailed solutions
A) 0.25
B) 0.33
C) 0.67
D) 0.75
A) Packing efficiency of a unit cell of x > Packing efficiency of a unit cell of y > Packing efficiency of a unit cell of z
B) LY > LZ
C) LX > LY
D) Density of x > Density of y
A) 25
B) 35
C) 55
D) 75
A) 30.27%
B) 68.02%
C) 74.05%
D) 78.54%
A) NaCl
B) ZnS
C) Na2O
D) CaF2
A) The coordination number of each type of ion in CsCl crystal is 8
B) A metal that crystallises in bcc structure has a coordination number of 12
C) A unit cell of an ionic crystal shares some of its ions with other unit cells
D) The length of the unit cell in NaCl is 552 pm. (rNa+ = 95pm; rCl- = 181pm)
A) Frenkel defect is usually favoured by a very small difference in the sizes of cation and anion
B) Frenkel defect is a dislocation defect
C) Trapping of an electron in the lattice leads to the formation of F-centre
D) Schottky defects have no effect on the physical properties of solids
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 Solid State in JEE Advanced?
Solid State has 2-3% weightage in the JEE Advanced exam. Though it's not one of the chapters with very high weightage such as Chemical Thermodynamics or Electrochemistry, it is nevertheless a significant chapter in Inorganic Chemistry. Majority of questions of this chapter are related to crystal lattices, packing fraction, and defects in solids, which are used to understand the properties of solids and materials.
2. Is Solid State a difficult chapter?
Solid State is a moderate difficulty chapter for JEE Advanced. The ideas such as unit cells, crystal structures, and packing efficiency are simple to grasp, but using them to solve problems is not so easy. Band theory and defects in solids may appear to be complicated at first, but if you practice regularly, this chapter becomes quite simple. If you concentrate on practice problems and master the key formulas, you can score well in this section.
3. Is Solid State removed from JEE 2025?
No, Solid State has not been dropped from the JEE Advanced 2025 syllabus. It is still a significant topic of Inorganic Chemistry. You can prepare for questions on subjects such as crystal lattices, solid types, defects, and band theory. It's necessary to include this chapter in your study schedule to ensure you cover all sections of the syllabus.
4. Is Solid State important for JEE Advanced?
Yes, Solid State is crucial for JEE Advanced. Although it carries lower weightage (2-3%), it remains a common feature in Paper 1 and Paper 2. Concepts such as crystal structures, unit cells, and electrical properties of solids are fundamental and crucial concepts that frequently appear in exams. As it's of moderate level and comes frequently, it's strongly suggested to study Solid State well for improved performance in the exam.
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