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Sunday, 25 October

JEE Main · Chemistry · Class 11

Some Basic Concepts of Chemistry: JEE Main previous year questions

116 questions in 98 of the 108 JEE Main shifts Lumi analysed, asked in 8 of 8 years. Here is what this chapter tests and how.

Study this chapter
Questions
116
in 98 of 108 shifts · 8 of 8 years
Average a shift
1.0
of 25 Chemistry · 1.1 since 2024 0.2
Typical range
0.8–1.1
questions a shift; fewest 0.8, most 1.4
Weighted estimate
1.1
model, recent years count more · about 4.5 marks
  • Typical range (fact)
  • Average a shift (fact)
  • Weighted estimate (model)

Questions are counted per shift, out of the 25 each subject has, in the shifts Lumi analysed; papers that offered 30 a subject (2017, 2021–2024) are scaled to 25. Typical range: the middle six of the eight years (2017, 2020–2026), leaving out the single highest and lowest year. The average and the range are historical fact. The weighted estimate is a model: each year's share, with recent years counting more (half-life three years), and chapters NTA dropped from the syllabus set near zero. It is a guide to effort, not a forecast of the paper.

What to do

How to spend time on Some Basic Concepts of Chemistry

Priority

Should do

One of the 6 Chemistry chapters that took Chemistry from half to 80% of its questions in the 108 shifts analysed. How bands are set

Past questions
116in 98 of 108 shifts
Study plan gives it
17 hover 12 months; 13 h over 6
Study this chapter →

Ideas asked most often

  1. Molarity Calculation16×
  2. Mole and Avogadro Calculations11×
  3. Limiting Reagent Identification8×
  4. Theoretical and Percent Yield7×
  5. Empirical Formula from Mass Percentage6×

54 of the 106 ideas in Lumi’s map of this chapter have not been asked or touched in the shifts analysed. Of its idea-tagged questions from 2024 on, 15% tested an idea not asked in an earlier year, so learn the whole chapter, not just the list above.

Within each subject, chapters in NTA's 2026 syllabus are ranked by their average questions a shift over all 8 years analysed (history, not the model). Going down that list, the chapters that together held the first half of the subject's questions are Must do; the next ones, up to 80%, are Should do; the rest are Lower priority.

Key findings

Some Basic Concepts of Chemistry at a glance

  1. 01

    85%

    of its 34 questions from 2024 on that Lumi matched to an idea tested one JEE Main had asked in an earlier year; 100% came from a topic asked in an earlier year.

  2. 02

    51%

    of the 106 ideas in Lumi's map of the chapter have not been asked or touched on in the shifts analysed.

  3. 03

    56%

    of its questions asked for a numerical answer, 1.9 times the Chemistry average.

  4. 04

    2%

    of its questions were rated hard, against 6% across all Chemistry questions in the same shifts.

Questions a shift, year by year

Out of the 25 Chemistry questions in a shift. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift.

0240.8’171.1’200.9’210.9’220.8’230.8’241.4’251.1’26

Raw count: 2017: 1 in 1 shift · 2020: 13 in 12 shifts · 2021: 26 in 24 shifts · 2022: 26 in 24 shifts · 2023: 11 in 12 shifts · 2024: 18 in 18 shifts · 2025: 11 in 8 shifts · 2026: 10 in 9 shifts.

Kind of question

SHARE OF QUESTIONS
  • Numerical answer56%
  • Calculation26%
  • Recall, single correct6%
  • Multi-step5%
  • Application3%
  • Match the list2%
  • Conceptual1%
  • Two statements1%
  • Assertion–reason1%

Most common asks: mass of product from reactant mass (5); molarity from mass percent and density (3); molar mass from moles of gas evolved (2).

Profile

This chapter in numbers

Where it ranks, how steady it is, and what it costs to study.

Rank, all JEE chapters
#30
of 70 by weighted estimate
Rank in Chemistry
#15
of 21 chapters
Share of Chemistry
3.9%
of its questions, all shifts analysed
Busiest year
2025
1.4 questions a shift
Year to year
Steady
varies by about 0.2 questions a shift
Long-run direction
+0.03
questions a shift, per year
Easy questions
62%
2% rated hard
Numerical answer
56%
1.9× the Chemistry rate
With a figure
3%
graph, diagram or structure
Study time
17 h
13 h on a 6-month plan
Marks per study hour
0.26
#11 of 70 chapters
Foundation for others
79%
of its ideas are used in other chapters

Difficulty, year by year

Each question rated easy, medium or hard. Each bar is that year’s split, so years compare directly; the number is the questions in that year’s analysed shifts (1 to 24 shifts a year).

  • 20171
  • 202013
  • 202126
  • 202226
  • 202311
  • 202418
  • 202511
  • 202610
  • Easy
  • Medium
  • Hard

What it asks you to do

SHARE OF QUESTIONS
  • Calculation78%
  • Multi-step10%
  • Recall9%
  • Application3%
  • Conceptual1%

Coverage

How much of the chapter JEE Main has used

We split the chapter into 106 ideas. In the 108 shifts analysed, JEE Main built a question around 42 of them. Most of the chapter has never been the main idea of a question, so past questions alone leave most of it out.

Asked as the main idea
42
Touched on in a question
10
Never asked
54

Topics

What repeats, topic by topic

This chapter's questions per topic in each year's analysed shifts. The number is the count; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. 13 questions had no close topic in Lumi's map and count for the chapter only.

’17’20’21’22’23’24’25’26
016+questions in that year’s analysed shifts, shaded per shift
  • Mole Concept

    As a topic: 80 questions in 8 of 8 years, most often numerical value, 65% numerical answer. Recent asks: match list on atoms in given masses; statement I/II on mole fraction and Raoult deviation; empirical formula from mass percentage.

  • Stoichiometry

    As a topic: 81 questions in 7 of 8 years, most often numerical value, 68% numerical answer. Recent asks: numerical: residue mass on heating salt; numerical: percentage of element by Carius method; numerical: gas volume from impure reagent.

  • Redox Reactions

    As a topic: 50 questions in 7 of 8 years, most often numerical value, 54% numerical answer.

  • Ideal Gas Laws

    As a topic: 35 questions in 6 of 8 years, most often numerical value, 66% numerical answer.

Drill down

Topic, idea, question

Open a topic to see every idea JEE Main tested inside it, then open an idea to read the questions. Each row shows its 8 years.

  • Open57 · 49%812166725

    14 ideas inside

    • OpenRepeated15 · 26%2723
    • OpenRepeated10 · 18%2223
    • OpenRepeated6 · 11%3
    • OpenRepeated5 · 9%3
    • OpenRepeated5 · 9%2
    • OpenRepeated3 · 5%
    • OpenRepeated3 · 5%2
    • OpenRepeated2 · 4%
    • OpenRepeated2 · 4%
    • OpenRepeated2 · 4%
    • Open1 · 2%
    • Open1 · 2%
    • Open1 · 2%
    • Open1 · 2%
  • Open41 · 35%2984675
  • Open3 · 3%2
  • Open1 · 1%
  • Open1 · 1%

Squares are the 8 years with analysed shifts, 2017 to 2026. A number is the questions that year when there is more than one; the shade is scaled to one shift, so a year with more analysed shifts (1 to 24 a year) does not look darker. Share is of the level above.

Ideas

The exact ideas JEE Main has asked

Inside the topics, 28 different ideas were tested; 18 came more than once. These are the repeats, then the ideas new since 2024.

Dots are the 8 years with analysed shifts, 2017 to 2026.

Every question

All 116 Some Basic Concepts of Chemistry questions

Newest first, shift by shift. The newest 40 show their opening words; older ones name the idea they tested. Each opens with its options and the official answer.

JEE Main 202610 questions

  1. 2 Apr 2026, Shift 1 · Q51The mass of iron converted into Fe3O4\mathrm{Fe_3O_4} by the action of 1818 g of steam is : (Given : Molar mass of H, O and Fe are 1,161, 16…EasySingle correct
  2. 2 Apr 2026, Shift 2 · Q51The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1. It has two carbon atoms. The weight (in g) of CO2(g)CO_2(g) formed…MediumSingle correct
  3. 2 Apr 2026, Shift 2 · Q62Complete combustion of X g of an organic compound gave 0.25 g of CO2CO_2 and 0.12 g of H2OH_2O. If the % of carbon is 25% and of hydrogen is…MediumSingle correct
  4. 4 Apr 2026, Shift 1 · Q51Number of moles and number of molecules in 1.41871.4187 L of SO2\mathrm{SO_2} at STP respectively areEasySingle correct
  5. 4 Apr 2026, Shift 2 · Q51The correct order of total number of atoms present in (A) 2 moles of cyclohexane (B) 684 g of sucrose (C) 90.8 L of dihydrogen at STP is:EasySingle correct
  6. 5 Apr 2026, Shift 1 · Q51How many grams of residue is obtained by heating 2.76 g of silver carbonate? (Given : Molar mass of C, O and Ag are 12, 16 and 108 g…EasySingle correct
  7. 5 Apr 2026, Shift 2 · Q51What volume of hydrogen gas at STP would be liberated by action of 50 mL of H2SO4\mathrm{H_2SO_4} of 50% purity (density = 1.3 g mL−1^{-1})…MediumSingle correct
  8. 6 Apr 2026, Shift 1 · Q51An oxide of iron contains 69.9% iron, its empirical formula, is: (Given : Molar mass of Fe and O are 56 and 16 g mol−1^{-1} respectively.)EasySingle correct
  9. 6 Apr 2026, Shift 2 · Q51Which of the following contain the same number of atoms ? (Given : Molar mass in g mol−1^{-1} of H, He, O and S are 1, 4, 16 and 32…EasyOther
  10. 8 Apr 2026, Shift 2 · Q51Match List - I with List - II. List - I (Mass of substance) | List - II (Number of atoms) A. 1.8 mg water | I.…EasyMatch the list

JEE Main 202511 questions

  1. 2 Apr 2025, Shift 1 · Q51CaCO3(s)+2HCl(aq)→CaCl2(aq)+CO2(g)+H2O(l)\mathrm{CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(aq)+CO_2(g)+H_2O(l)} Consider the above reaction, what mass of CaCl2\mathrm{CaCl_2} will be…MediumSingle correct
  2. 2 Apr 2025, Shift 2 · Q64In Dumas' method for estimation of nitrogen, 0.5 gram of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715…MediumSingle correct
  3. 3 Apr 2025, Shift 1 · Q51Among 10−910^{-9} g (each) of the following elements, which one will have the highest number of atoms? Element: Pb, Po, Pr and PtEasySingle correct
  4. 3 Apr 2025, Shift 2 · Q51Mass of magnesium required to produce 220 mL of hydrogen gas at STP on reaction with excess of dil. HCl is Given: Molar mass of Mg is…EasySingle correct
  5. 3 Apr 2025, Shift 2 · Q5410 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric…MediumSingle correct
  6. 3 Apr 2025, Shift 2 · Q63Compounds that should not be used as primary standards in titrimetric analysis are : A. Na2Cr2O7\mathrm{Na_2Cr_2O_7} B. Oxalic acid C. NaOH D.…MediumOther
  7. 4 Apr 2025, Shift 2 · Q74The amount of calcium oxide produced on heating 150 kg limestone (75% pure) is __________ kg. (Nearest integer) Given : Molar mass (in…EasyNumerical value
  8. 7 Apr 2025, Shift 1 · Q51At the sea level, the dry air mass percentage composition is given as nitrogen gas: 70.0, oxygen gas: 27.0 and argon gas: 3.0. If total…MediumSingle correct
  9. 7 Apr 2025, Shift 2 · Q71Butane reacts with oxygen to produce carbon dioxide and water following the equation given below.…EasyNumerical value
  10. 8 Apr 2025, Shift 2 · Q62On combustion 0.210 g of an organic compound containing C, H and O gave 0.127 g H2O\mathrm{H_2O} and 0.307 g CO2\mathrm{CO_2}. The…MediumSingle correct
  11. 8 Apr 2025, Shift 2 · Q7120 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium…EasyNumerical value

JEE Main 202418 questions

  1. 4 Apr 2024, Shift 1 · Q61The Molarity (M) of an aqueous solution containing 5.85 g of NaCl in 500 mL water is : (Given : Molar Mass Na : 23 and Cl : 35.5…EasySingle correct
  2. 4 Apr 2024, Shift 2 · Q61Choose the Incorrect Statement about Dalton's Atomic TheoryEasySingle correct
  3. 5 Apr 2024, Shift 1 · Q61The incorrect postulates of the Dalton's atomic theory are : (A) Atoms of different elements differ in mass. (B) Matter consists of…EasyOther
  4. 5 Apr 2024, Shift 1 · Q73An organic compound has 42.1% carbon, 6.4% hydrogen and remainder is oxygen. If its molecular weight is 342, then its molecular formula is :MediumSingle correct
  5. 5 Apr 2024, Shift 2 · Q61The number of moles of methane required to produce 11 g CO2(g)\mathrm{CO_2(g)} after complete combustion is : (Given molar mass of methane in…EasySingle correct
  6. 6 Apr 2024, Shift 1 · Q61The density of 'x' M solution ('x' molar) of NaOH is 1.12 g mL−1^{-1}, while in molality, the concentration of the solution is 3 m (3…EasySingle correct
  7. 8 Apr 2024, Shift 1 · Q61Combustion of glucose (C6H12O6\mathrm{C_6H_{12}O_6}) produces CO2\mathrm{CO_2} and water. The amount of oxygen (in g) required for the complete…EasySingle correct
  8. 9 Apr 2024, Shift 1 · Q80Identify the incorrect statements regarding primary standard of titrimetric analysis. (A) It should be purely available in dry form. (B)…MediumOther
  9. 9 Apr 2024, Shift 2 · Q61The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 'AA'…EasySingle correct
  10. 1 Feb 2024, Shift 1 · Q80Given below are two statements : Statement (I) : Potassium hydrogen phthalate is a primary standard for standardisation of sodium…EasyTwo statements
  11. 1 Feb 2024, Shift 1 · Q81Consider the following reaction : 3PbCl2+2(NH4)3PO4→Pb3(PO4)2+6NH4Cl\mathrm{3PbCl_2 + 2(NH_4)_3PO_4 \rightarrow Pb_3(PO_4)_2 + 6NH_4Cl} If 72 mmol of PbCl2\mathrm{PbCl_2} is…EasyNumerical value
  12. 1 Feb 2024, Shift 2 · Q8110 mL of gaseous hydrocarbon on combustion gives 40 mL of CO2(g)\mathrm{CO_2(g)} and 50 mL of water vapour. Total number of carbon and…EasyNumerical value
  13. 27 Jan 2024, Shift 1 · Q81Mass of methane required to produce 22 g of CO2\mathrm{CO_2} after complete combustion is __________ g. (Given Molar mass in…EasyNumerical value
  14. 29 Jan 2024, Shift 1 · Q81A solution of H2SO4\mathrm{H_2SO_4} is 31.4% H2SO4\mathrm{H_2SO_4} by mass and has a density of 1.25g/mL. The molarity of the H2SO4\mathrm{H_2SO_4}…EasyNumerical value
  15. 30 Jan 2024, Shift 1 · Q81The mass of sodium acetate (CH3COONa\mathrm{CH_3COONa}) required to prepare 250 mL of 0.35 M aqueous solution is ________ g. (Molar mass of…EasyNumerical value
  16. 31 Jan 2024, Shift 1 · Q81Number of moles of methane required to produce 22g CO2(g)\mathrm{CO_{2(g)}} after combustion is x×10−2\mathrm{x}\times10^{-2} moles. The value of…EasyNumerical value
  17. 31 Jan 2024, Shift 2 · Q61A sample of CaCO3\mathrm{CaCO_3} and MgCO3\mathrm{MgCO_3} weighed 2.21 g is ignited to constant weight of 1.152 g. The composition of mixture is…MediumSingle correct
  18. 31 Jan 2024, Shift 2 · Q83The molarity of 1 L orthophosphoric acid (H3PO4\mathrm{H_3PO_4}) having 70% purity by weight (specific gravity 1.54 g cm−3^{-3}) is _________…EasyNumerical value

JEE Main 202311 questions

  1. 6 Apr 2023, Shift 1 · Q81If 5 moles of BaCl2\mathrm{BaCl_2} is mixed with 2 moles of Na3PO4\mathrm{Na_3PO_4}, the maximum number of moles of Ba3(PO4)2\mathrm{Ba_3(PO_4)_2}…EasyNumerical value
  2. 6 Apr 2023, Shift 2 · Q61Normality and n-factor Calculation · Easy · Single correct
  3. 8 Apr 2023, Shift 1 · Q90Empirical Formula from Combustion Data · Easy · Numerical value
  4. 8 Apr 2023, Shift 2 · Q61Open the question · Easy · Other
  5. 10 Apr 2023, Shift 1 · Q61Mole and Avogadro Calculations · Easy · Single correct
  6. 10 Apr 2023, Shift 2 · Q61Mole and Avogadro Calculations · Easy · Match the list
  7. 10 Apr 2023, Shift 2 · Q80Molarity Calculation · Easy · Assertion–reason
  8. 11 Apr 2023, Shift 2 · Q81Mass-Volume Stoichiometry at STP · Easy · Numerical value
  9. 12 Apr 2023, Shift 1 · Q61Molecular Formula Determination · Medium · Single correct
  10. 13 Apr 2023, Shift 1 · Q90Mole-to-Mole Relationships · Medium · Numerical value
  11. 13 Apr 2023, Shift 2 · Q81Mole-to-Mole Relationships · Easy · Numerical value

JEE Main 202226 questions

  1. 25 Jul 2022, Shift 1 · Q61Mole-to-Mole Relationships · Easy · Single correct
  2. 25 Jul 2022, Shift 2 · Q81Gaseous Stoichiometry · Medium · Numerical value
  3. 26 Jul 2022, Shift 1 · Q81PPM and Mass Percentage · Medium · Numerical value
  4. 26 Jul 2022, Shift 1 · Q85Molarity Calculation · Medium · Numerical value
  5. 26 Jul 2022, Shift 2 · Q61Mole and Avogadro Calculations · Easy · Single correct
  6. 27 Jul 2022, Shift 2 · Q81Normality and n-factor Calculation · Medium · Numerical value
  7. 27 Jul 2022, Shift 2 · Q90Theoretical and Percent Yield · Easy · Numerical value · has a figure
  8. 28 Jul 2022, Shift 1 · Q81Limiting Reagent and Reaction Yield · Medium · Numerical value
  9. 28 Jul 2022, Shift 2 · Q51Molarity of Diluted and Mixed Solutions · Easy · Numerical value
  10. 29 Jul 2022, Shift 1 · Q62Limiting Reagent Identification · Easy · Single correct
  11. 29 Jul 2022, Shift 2 · Q61Mass-Mass Stoichiometry · Easy · Single correct
  12. 24 Jun 2022, Shift 1 · Q61Hydrocarbon Combustion General Equation · Medium · Single correct
  13. 24 Jun 2022, Shift 2 · Q61Empirical Formula from Mass Percentage · Easy · Single correct
  14. 25 Jun 2022, Shift 1 · Q81Mole and Avogadro Calculations · Easy · Numerical value
  15. 25 Jun 2022, Shift 1 · Q85Molarity of Diluted and Mixed Solutions · Medium · Numerical value
  16. 25 Jun 2022, Shift 2 · Q90Normality and n-factor Calculation · Easy · Numerical value
  17. 26 Jun 2022, Shift 1 · Q61Molarity Calculation · Easy · Single correct
  18. 26 Jun 2022, Shift 2 · Q81Limiting Reagent and Reaction Yield · Medium · Numerical value
  19. 26 Jun 2022, Shift 2 · Q90Limiting Reagent and Reaction Yield · Easy · Numerical value
  20. 27 Jun 2022, Shift 1 · Q89Molar Mass and Gas Volume · Medium · Numerical value
  21. 27 Jun 2022, Shift 2 · Q81Empirical Formula from Mass Percentage · Medium · Numerical value
  22. 28 Jun 2022, Shift 1 · Q81Thiosulfate-Iodine Reaction Stoichiometry · Medium · Numerical value
  23. 28 Jun 2022, Shift 2 · Q61Empirical Formula from Mass Percentage · Medium · Single correct
  24. 29 Jun 2022, Shift 1 · Q61Limiting Reagent Identification · Easy · Single correct
  25. 29 Jun 2022, Shift 2 · Q61Open the question · Easy · Single correct
  26. 30 Jun 2022, Shift 1 · Q81Limiting Reagent Identification · Medium · Numerical value

JEE Main 202126 questions

  1. 3 Aug 2021, Shift 1 · Q31Open the question · Easy · Single correct
  2. 3 Aug 2021, Shift 2 · Q51Percentage Purity of Samples · Medium · Numerical value
  3. 4 Aug 2021, Shift 1 · Q51Molarity Calculation · Easy · Numerical value
  4. 4 Aug 2021, Shift 2 · Q51Stoichiometry of Thermal Decomposition · Easy · Numerical value
  5. 26 Aug 2021, Shift 1 · Q51Molarity and Molality Interconversion · Medium · Numerical value
  6. 26 Aug 2021, Shift 2 · Q51Molarity Calculation · Medium · Numerical value
  7. 27 Aug 2021, Shift 1 · Q55Mohr's Salt Redox Titrations · Medium · Numerical value
  8. 27 Aug 2021, Shift 2 · Q51Limiting Reagent Identification · Medium · Numerical value
  9. 31 Aug 2021, Shift 1 · Q51Molarity Calculation · Easy · Numerical value
  10. 31 Aug 2021, Shift 2 · Q51Molarity Calculation · Easy · Numerical value
  11. 24 Feb 2021, Shift 1 · Q51Molarity Calculation · Easy · Numerical value
  12. 24 Feb 2021, Shift 2 · Q51Eudiometry and Gas Mixture Analysis · Medium · Numerical value
  13. 25 Feb 2021, Shift 1 · Q42Empirical Formula from Combustion Data · Easy · Single correct
  14. 25 Feb 2021, Shift 1 · Q51Composition of Solid Mixtures · Hard · Numerical value
  15. 25 Feb 2021, Shift 2 · Q51Normality and n-factor Calculation · Medium · Numerical value
  16. 26 Feb 2021, Shift 1 · Q51Open the question · Easy · Numerical value
  17. 26 Feb 2021, Shift 2 · Q51Molarity Calculation · Medium · Numerical value
  18. 25 Jul 2021, Shift 1 · Q51Mohr's Salt Redox Titrations · Medium · Numerical value
  19. 25 Jul 2021, Shift 1 · Q59Hydrocarbon Combustion General Equation · Easy · Numerical value
  20. 25 Jul 2021, Shift 2 · Q51Open the question · Easy · Numerical value
  21. 16 Mar 2021, Shift 2 · Q51Limiting Reagent Identification · Medium · Numerical value
  22. 17 Mar 2021, Shift 1 · Q60Theoretical and Percent Yield · Easy · Numerical value · has a figure
  23. 17 Mar 2021, Shift 2 · Q51Mole and Avogadro Calculations · Easy · Numerical value
  24. 18 Mar 2021, Shift 1 · Q51Mole and Avogadro Calculations · Easy · Numerical value
  25. 18 Mar 2021, Shift 2 · Q51Molarity Calculation · Easy · Numerical value
  26. 18 Mar 2021, Shift 2 · Q59Theoretical and Percent Yield · Easy · Numerical value · has a figure

JEE Main 202013 questions

  1. 8 Jan 2020, Shift 1 · Q33Open the question · Medium · Single correct
  2. 8 Jan 2020, Shift 1 · Q46PPM and Mass Percentage · Medium · Numerical value
  3. 8 Jan 2020, Shift 2 · Q46Mass-Mass Stoichiometry · Medium · Numerical value
  4. 9 Jan 2020, Shift 1 · Q46Molarity Calculation · Easy · Numerical value
  5. 9 Jan 2020, Shift 1 · Q50Open the question · Easy · Numerical value
  6. 2 Sep 2020, Shift 1 · Q33Open the question · Easy · Single correct
  7. 2 Sep 2020, Shift 2 · Q50Empirical Formula from Mass Percentage · Hard · Numerical value
  8. 3 Sep 2020, Shift 2 · Q46Molarity Calculation · Easy · Numerical value
  9. 3 Sep 2020, Shift 2 · Q49Normality and n-factor Calculation · Medium · Numerical value
  10. 4 Sep 2020, Shift 1 · Q46Limiting Reagent and Reaction Yield · Easy · Numerical value
  11. 4 Sep 2020, Shift 2 · Q46Water of Crystallization Determination · Medium · Numerical value
  12. 5 Sep 2020, Shift 1 · Q47Hydrocarbon Combustion General Equation · Easy · Numerical value
  13. 6 Sep 2020, Shift 2 · Q40Average Atomic Mass from Isotopes · Easy · Single correct

JEE Main 20171 question

  1. 2 Apr 2017 (offline) · Q32Molar Mass and Gas Volume · Easy · Single correct

Questions from the official JEE Main papers published by NTA. Chapter, topic and idea tags, counts and notes are Lumi’s. Pattern: Asked most years.

More Chemistry, Class 11

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