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Some Basic Concepts of Chemistry
29 topics, ranked by how often each is asked.
- 49 questions
- 29 papers
- 2.78% of Chemistry
Topics
The squares are the last ten exam years: filled means it was asked that year.
Topics
- 1Dalton's Atomic Theory1 questionPractise Dalton's Atomic Theory
- 2Mole Concept and Atomicity1 questionPractise Mole Concept and Atomicity
- 3Stoichiometry of Acid-Base Neutralisation1 questionPractise Stoichiometry of Acid-Base Neutralisation
- 4Techniques of Purification of Solids1 questionPractise Techniques of Purification of Solids
- 5Mole Concept and Avogadro Number2 questionsPractise Mole Concept and Avogadro Number
- 6Empirical Formula from Percentage Composition1 questionPractise Empirical Formula from Percentage Composition
- 7Stoichiometry and Percentage Purity2 questionsPractise Stoichiometry and Percentage Purity
- 8Empirical and Molecular Formula1 questionPractise Empirical and Molecular Formula
- 9Mole Concept9 questionsPractise Mole Concept
- 10Stoichiometry6 questionsPractise Stoichiometry
- 11Stoichiometry of gaseous reactions (Boudouard reaction: $CO_2 + C \rightarrow 2CO$)1 questionPractise Stoichiometry of gaseous reactions (Boudouard reaction: $CO_2 + C \rightarrow 2CO$)
- 12Molarity calculations1 questionPractise Molarity calculations
- 13Mole concept and Avogadro's number1 questionPractise Mole concept and Avogadro's number
- 14Determination of Avogadro's number1 questionPractise Determination of Avogadro's number
- 15Significant figures1 questionPractise Significant figures
- 16Molarity and molality1 questionPractise Molarity and molality
- 17Rounding off significant figures1 questionPractise Rounding off significant figures
- 18Stoichiometry and mole concept1 questionPractise Stoichiometry and mole concept
- 19Mole concept – number of molecules1 questionPractise Mole concept – number of molecules
- 20Mole concept – atomic masses from compounds1 questionPractise Mole concept – atomic masses from compounds
- 21Limiting reagent3 questionsPractise Limiting reagent
- 22Molarity3 questionsPractise Molarity
- 23Stoichiometry of Gaseous Reactions1 questionPractise Stoichiometry of Gaseous Reactions
- 24Empirical Formula2 questionsPractise Empirical Formula
- 25Average Atomic Mass1 questionPractise Average Atomic Mass
- 26Stoichiometry and Limiting Reagent1 questionPractise Stoichiometry and Limiting Reagent
- 27Molarity on Mixing Solutions1 questionPractise Molarity on Mixing Solutions
- 28Percentage Composition and Molecular Mass1 questionPractise Percentage Composition and Molecular Mass
- 29Molar Mass from Volume and Density1 questionPractise Molar Mass from Volume and Density
No topics match.
Questions per paper
Asked in 14 of the last 16 papers (2017–2026).
- 2026: 2 questions
- 2026 Re-NEET: 2 questions
- 2025: 2 questions
- 2024: 4 questions
- 2024 Re-NEET: 2 questions
- 2023: 1 question
- 2023 Manipur: not asked
- 2022: 1 question
- 2022 Phase 2: 1 question
- 2021: 1 question
- 2020: 1 question
- 2020 Phase-2: 1 question
- 2019: 1 question
- 2019 Odisha: 1 question
- 2018: 2 questions
- 2017: not asked
Concepts tested
- Empirical formula from percentage composition 3
- Comparing number of moles 2
- Limiting reagent 2
- Number of molecules 2
- atomic-weights-two-compounds
- Avogadro number and molar mass
- Calculating empirical formula from mass percent and atomic mass
- Calculation of Number of Atoms
- Comparing number of atoms across different mole-based quantities
- Concentration of ions
- Determination of Avogadro's number
- Excess reagent
- Gay-Lussac's law of gaseous volumes
- Limitations of Dalton's Theory
- Limiting reagent calculation
- Limiting reagent calculation in neutralisation
- Limiting reagent with percentage yield
- mass of CO2 from impure limestone