Some Basic Concepts of Chemistry
205 JEE Mains Chemistry previous year questions (PYQs) from 75 papers, 2021 to 2026, with answers and worked solutions.
About this chapter
- Most-asked subtopics: Reaction Stoichiometry and Limiting Reagent (34), Equivalents and Titrations (31), Gas Laws and Gas Volumes (30).
- Updated 6 August 2026.
#1Measurement and the Mole
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- JEE Mains · 2025 · 2 Apr 2025 · Q48ModerateHas image
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#23Percentage Composition and Empirical Formula
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#43Reaction Stoichiometry and Limiting Reagent
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See all 205 questionsMore chapters in this subject
- Alcohols, Phenols and Ethers102
- Aldehydes, Ketones and Carboxylic Acids165
- Amines160
- Biomolecules135
- Chemical Bonding and Molecular Structure176
- Chemical Kinetics126
- Chemical Thermodynamics128
- Chemistry in Everyday Life49
- Classification of Elements and Periodicity117
- Coordination Compounds215
- Electrochemistry125
- Environmental Chemistry65
- Equilibrium131
- General Principles and Processes of Isolation of Elements74
- Haloalkanes and Haloarenes92
- Hydrocarbons165
- Hydrogen64
- Organic Chemistry - Some Basic Principles and Techniques243
- Organic Reaction Mechanisms48
- Polymers46
- Solid State33
- Solutions110
- Structure of Atom130
- Surface Chemistry64
- The d- and f-Block Elements214
- The p-Block Elements185
- The s-Block Elements88