If you’re searching for “important topics for JEE Chemistry,” you’re in the right place! Chemistry can be a scoring subject in JEE, provided you focus on the right subtopics. Here’s a detailed breakdown based on the trends from 2020, 2021, and 2022 JEE question papers.
Physical Chemistry: High-Scoring Topics
1. Mole Concept and Stoichiometry
- Empirical formula derivation (2022).
- Limiting reagent problems (2020).
- Molarity and molality conversions (2021).
2. Atomic Structure
- Energy of photon and de Broglie wavelength (2021).
- Radius calculations using Rydberg formula (2022).
- Quantum numbers and electronic configuration (2020).
3. Chemical Bonding
- Bond order and Molecular Orbital Theory (O₂⁺ vs. O₂⁻, 2020).
- Hybridization and geometry (XeF₄, 2021).
- Dipole moment trends (NH₃ vs. NF₃, 2022).
4. Thermodynamics
- Gibbs free energy and spontaneity (2020).
- Enthalpy of combustion (2021).
- Relation between ΔH, ΔU, and work done (2022).
5. Electrochemistry
- Nernst equation applications (2020).
- Faraday’s laws of electrolysis (2021).
- EMF and Gibbs free energy relation (2022).
Inorganic Chemistry: Weightage Subtopics
1. Periodic Table and Trends
- Ionization energy order (2020).
- Electronegativity variations (2021).
- Atomic radius comparison (2022).
2. Coordination Compounds
- Nomenclature and IUPAC rules (2020).
- Crystal field splitting (2021).
- Magnetic moment of complexes (2022).
3. Group Chemistry
- Group 15: Oxidation state of P in PCl₅ (2021).
- Group 16: Preparation and properties of ozone (2020).
- Group 18: Xenon fluorides (2020).
4. Metallurgy
- Extraction of Al (Hall-Héroult process, 2020).
- Ellingham diagrams and their interpretation (2021).
Organic Chemistry: Frequently Asked Topics
1. General Organic Chemistry (GOC)
- Inductive and resonance effects on acidity (2020).
- Stability of carbocations (2021).
- Hyperconjugation and alkene stability (2022).
2. Aldehydes and Ketones
- Aldol condensation mechanism (2020).
- Cannizzaro reaction (2021).
- Nucleophilic addition to carbonyl compounds (2022).
3. Alcohols and Phenols
- Phenol nitration reaction (2020).
- Williamson ether synthesis (2021).
- Dehydration of alcohols to form alkenes (2022).
4. Amines
- Carbylamine test (2020).
- Hoffmann bromamide reaction (2022).
- Basicity order of amines (2021).
5. Polymers and Biomolecules
- Biodegradable polymers (2020).
- Structure of glucose and α- and β-forms (2021).
- Protein structures: Primary vs. secondary (2022).
Why These Topics Matter for JEE
- Frequent Appearance: Many of these topics consistently feature in JEE Main and Advanced papers.
- High Weightage: Subtopics like GOC, Thermodynamics, and Coordination Compounds often form 10-15% of the total Chemistry section.
- Numerical and Conceptual: A mix of numerical problems (Physical Chemistry) and factual questions (Inorganic Chemistry).
Tips to Prepare for JEE Chemistry
- Focus on NCERT for Inorganic Chemistry.
- Solve previous year papers to understand trends.
- Practice numerical problems daily, especially in Physical Chemistry.
- Revise mechanisms and exceptions for Organic Chemistry.
By concentrating on these topics and solving past questions, you can significantly boost your JEE Chemistry score!