Some Basic Concepts of Chemistry – JEE Main Previous Year Questions (2014–2025)

All 6 JEE Main previous-year questions from Some Basic Concepts of Chemistry (Chemistry), 2014–2025, taken from 5 papers. Practise them together in one test with the official marking and answer key, then review every answer.

▶ Practise all 6 questionsAll JEE Main chapters

Some Basic Concepts of Chemistry questions by paper

Sample questions

• JEE Main 2025 22 Jan Shift 1
  2.73 Some CO gas was kept in a sealed container at a pressure of 1 atm and at 273 This entire amount of CO gas was later passed through an aqueous solution of Ca OH The…
• JEE Main 2019 9 Jan Shift 1
  A solution of sodium sulfate contains 92 of Na ions per kilogram of water The molality of Na ions in that solution in mol kg lis 1 4 2 8 3 12 4 16
• JEE Main 2018 Set B (offline)
  The ratio of mass percent of and of an organic compound is 6 1 If one molecule of the above compound contains half as much oxygen as required to burn one molecule of…
• JEE Main 2017 Set B (offline)
  The most abundant elements by mass in the body of a healthy human adult are Oxygen 61.4 Carbon 22.9 Hydrogen 10.0 and Nitrogen 2.6 The weight which a 75 kg person would…

Question text shown from the scanned paper; open the test to see each question exactly as printed.

More Chemistry chapters

• Structure of Atom 7
• Classification of Elements and Periodicity 7
• Chemical Bonding and Molecular Structure 9
• States of Matter 3
• Thermodynamics 11
• Equilibrium 12
• Redox Reactions 4
• Hydrogen 5
• s-Block Elements 4
• p-Block Elements 13
• Organic Chemistry: Basic Principles 12
• Hydrocarbons 11
• Environmental Chemistry 5
• Solid State 6
• Solutions 9
• Electrochemistry 11
• Chemical Kinetics 8
• Surface Chemistry 5
• General Principles of Isolation of Elements 4
• d- and f-Block Elements 6
• Coordination Compounds 15
• Haloalkanes and Haloarenes 10
• Alcohols, Phenols and Ethers 7
• Aldehydes, Ketones and Carboxylic Acids 10