Some Basic Concepts of Chemistry – NEET Previous Year Questions (2014–2026)

All 15 NEET previous-year questions from Some Basic Concepts of Chemistry (Chemistry), 2014–2026, taken from 11 papers. Practise them together in one test with the official marking and answer key, then review every answer.

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Some Basic Concepts of Chemistry questions by paper

Sample questions

• NEET 2026 Code 13 (3 May exam)
  The number of hydrogen atoms present in 5.4 of urea is Given Molar mass of urea 60 mol 6.022 10 particles mol 1 2.168 2 2.168 3 1.084 4 1.084
• NEET 2025 Code 45
  Dalton's Atomic theory could not explain which of the following 1 Law of conservation of mass 2 Law of constant proportion 3 Law of multiple proportion 4 Law of gaseous…
• NEET 2025 Code 45
  Among the following choose the ones with equal number of atoms A 212 of 8 molar mass 106 248 of molar mass 62 240 of molar mass 40 of molar mass 2 220 of molar mass 44…
• NEET 2024 Code T3
  gram of sodium hydroxide was treated with 25 mL of 0.75 HCI solution the mass of sodium hydroxide left unreacted is equal to 1 Zero mg 2 200 mg 3 750 mg 4

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More Chemistry chapters

• Structure of Atom 22
• Classification of Elements and Periodicity 16
• Chemical Bonding and Molecular Structure 35
• States of Matter 12
• Thermodynamics 21
• Equilibrium 33
• Redox Reactions 10
• Hydrogen 7
• s-Block Elements 15
• p-Block Elements 42
• Organic Chemistry: Basic Principles 21
• Hydrocarbons 34
• Environmental Chemistry 8
• Solid State 15
• Solutions 21
• Electrochemistry 25
• Chemical Kinetics 26
• Surface Chemistry 13
• General Principles of Isolation of Elements 9
• d- and f-Block Elements 24
• Coordination Compounds 32
• Haloalkanes and Haloarenes 20
• Alcohols, Phenols and Ethers 27
• Aldehydes, Ketones and Carboxylic Acids 26