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Friday, 9 October

JEE Main Chemistry · Class 11

Organic Chemistry: Some Basic Principles and Techniques: JEE Main previous year questions

Organic Chemistry: Some Basic Principles and Techniques had 91 questions in the 42 JEE Main shifts Lumi analysed, about 1.7 a shift, asked in 41 of 42 shifts. It ranks 1 of 30 Chemistry chapters by questions; 3% of its questions were hard.

Questions
91
in 41 of 42 shifts
A shift, on average
1.7
of 25 Chemistry questions
Since 2024
+1.0
1.4 a shift in 2017–23, 2.3 in 2024–26
Numerical answer
23
25% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
012241’175’208’2110’225’2324’2422’2516’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 20171
  • 20205
  • 20218
  • 202210
  • 20235
  • 202424
  • 202522
  • 202616
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

15 topics and 35 distinct ideas; 14 ideas were asked more than once. Most questions are single correct and recall.

Topics, by questions

26 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
14 repeat

Study it on Lumi

Organic Chemistry – Some Basic Principles and Techniques: the interactive lesson

Every question

All 91 Organic Chemistry: Some Basic Principles and Techniques questions

Newest first. Each opens with its options and the official answer.

2026 16 questions

  1. 2 Apr 2026, Shift 1 · Q63Given below are two statements : Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation. Statement…MediumTwo statements
  2. 2 Apr 2026, Shift 1 · Q65In IUPAC nomenclature, the correct order of decreasing priority of functional group is :EasySingle correct
  3. 2 Apr 2026, Shift 1 · Q66For the given molecule, "xx", the preferred site for the attack of the electrophile is :MediumDiagram basedHas a figure
  4. 2 Apr 2026, Shift 2 · Q63Given below are two statements: Statement I: In…MediumSingle correct
  5. 4 Apr 2026, Shift 1 · Q63Increasing order of electron withdrawing power of following functional groups is: a. −CN-\mathrm{CN} b. −COOH-\mathrm{COOH} c.…MediumSingle correct
  6. 4 Apr 2026, Shift 1 · Q732.02.0 g of a bromo hydrocarbon (X) was subjected to Carius analysis, gave 3.363.36 g of AgBr. The percentage of carbon in the compound (X)…MediumNumerical value
  7. 4 Apr 2026, Shift 2 · Q61Consider the following molecules/species: (x) cycloheptatrienone (tropone): a seven-membered ring with three C=C double bonds and an…HardDiagram basedHas a figure
  8. 4 Apr 2026, Shift 2 · Q75In sulphur estimation, 2.0×10−32.0\times10^{-3} mol of an organic compound (X) (molar mass 76 g mol−1\mathrm{g\ mol^{-1}}) gave 0.4813 g of barium…EasyNumerical value
  9. 5 Apr 2026, Shift 1 · Q63Given below are two statements: Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is…EasyTwo statements
  10. 5 Apr 2026, Shift 1 · Q72In an estimation of sulphur by Carius method 0.2 g of the substance gave 0.6 g of BaSO4\mathrm{BaSO_4}. The percentage of sulphur in the…EasyNumerical value
  11. 5 Apr 2026, Shift 2 · Q62Match List - I with List - II. List - I (Purification technique) A. Simple distillation B. Fractional distillation C. Steam distillation…EasyMatch the list
  12. 5 Apr 2026, Shift 2 · Q64Identify the correct IUPAC name of hydrocarbon (xx) containing three primary carbon atoms and with molar mass 72 g mol−1^{-1}.EasySingle correct
  13. 6 Apr 2026, Shift 1 · Q63Rf\mathrm{R_f} value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42. 2-methylpropene is treated with dilute…MediumSingle correct
  14. 6 Apr 2026, Shift 2 · Q62Given below are two statements : Statement I : A mixture of C12H22O11\mathrm{C_{12}H_{22}O_{11}} (sugar) and NaCl can be separated by dissolving…EasyTwo statements
  15. 8 Apr 2026, Shift 2 · Q62Given below are two statements : Statement I : Vapours of the liquid with higher boiling point condense before vapours of the liquid with…EasyTwo statements
  16. 8 Apr 2026, Shift 2 · Q64The total number of aromatic compounds/species from the following is [figures: p-benzoquinone; tropylium cation (cycloheptatrienyl…MediumOtherHas a figure

2025 22 questions

  1. 2 Apr 2025, Shift 1 · Q63On complete combustion 1.0 g of an organic compound (X) gave 1.46 g of CO2\mathrm{CO_2} and 0.567 g of H2O\mathrm{H_2O}. The empirical…MediumSingle correct
  2. 2 Apr 2025, Shift 1 · Q64Consider the following compound (X) H−C≡C−CH2−CH(CH3)−CH3\mathrm{H-C{\equiv}C-CH_2-CH(CH_3)-CH_3} with the carbons numbered I (the terminal ≡\equivC-H…MediumSingle correctHas a figure
  3. 2 Apr 2025, Shift 2 · Q62Formation of Na4[Fe(CN)5NOS]\mathrm{Na_4[Fe(CN)_5NOS]}, a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate…EasySingle correct
  4. 2 Apr 2025, Shift 2 · Q63Match List - I with List - II. List - I (Purification technique) (A) Distillation (simple) (B) Fractional distillation (C) Distillation…MediumMatch the list
  5. 2 Apr 2025, Shift 2 · Q65In 3,3-dimethylhex-1-en-4-yne, there are _____sp3sp^3, _____sp2sp^2 and _____spsp hybridised carbon atoms respectively.EasySingle correct
  6. 2 Apr 2025, Shift 2 · Q67Match List - I with List - II. List - I (Reaction) (A)…EasyMatch the listHas a figure
  7. 3 Apr 2025, Shift 1 · Q64Identify the correct statements from the following. A. [structure: pentan-3-one (skeletal, C=O at the middle carbon)] and [structure:…MediumOtherHas a figure
  8. 3 Apr 2025, Shift 1 · Q67The least acidic compound, among the following is: (A) [structure: 3-ethoxyphenol, EtO and OH meta on a benzene ring] (B) [structure:…MediumDiagram basedHas a figure
  9. 3 Apr 2025, Shift 1 · Q740.5 g of an organic compound on combustion gave 1.46 g of CO2\mathrm{CO_2} and 0.9 g of H2O\mathrm{H_2O}. The percentage of carbon in the…EasyNumerical value
  10. 3 Apr 2025, Shift 1 · Q75During estimation of nitrogen by Dumas' method of compound X (0.42 g) [structure X: piperazine, six-membered ring with two NH groups at…EasyNumerical valueHas a figure
  11. 3 Apr 2025, Shift 2 · Q64In Dumas' method for estimation of nitrogen 0.4 g of an organic compound gave 60 mL of nitrogen collected at 300 K temperature and 715 mm…MediumSingle correct
  12. 3 Apr 2025, Shift 2 · Q65Given below are two statements: Statement I : Hyperconjugation is not a permanent effect. Statement II : In general, greater the number of…EasyTwo statements
  13. 3 Apr 2025, Shift 2 · Q66What is the correct IUPAC name of [structure] ?EasyDiagram basedHas a figure
  14. 3 Apr 2025, Shift 2 · Q75The total number of structural isomers possible for the substituted benzene derivatives with the molecular formula C9H12\mathrm{C_9H_{12}} is…MediumNumerical value
  15. 4 Apr 2025, Shift 2 · Q62Match List - I with List - II. List - I (Separation of) List - II (Separation Technique) (A) Aniline from aniline-water mixture (I) Simple…MediumMatch the list
  16. 4 Apr 2025, Shift 2 · Q63In which pairs, the first ion is more stable than the second ? (A) [figure: 1-methoxycyclohexyl cation] & [figure: 1-methylcyclohexyl…MediumOtherHas a figure
  17. 4 Apr 2025, Shift 2 · Q64The IUPAC name of the following compound is : HC≡C−CH2−CH(OH)−CH2−CH=CH2\mathrm{HC\equiv C-CH_2-CH(OH)-CH_2-CH=CH_2}MediumSingle correct
  18. 7 Apr 2025, Shift 1 · Q65Which of the following is the correct IUPAC name of given organic compound (X)?EasySingle correctHas a figure
  19. 7 Apr 2025, Shift 1 · Q74An organic compound weighing 500 mg, produced 220 mg of CO2\mathrm{CO_2}, on complete combustion. The percentage composition of carbon in…EasyNumerical value
  20. 7 Apr 2025, Shift 2 · Q74In Dumas' method 292 mg of an organic compound released 50 mL of nitrogen gas (N2\mathrm{N_2}) at 300 K temperature and 715 mm Hg…MediumNumerical value
  21. 8 Apr 2025, Shift 2 · Q63What is the correct IUPAC name of [structure: cyclopentene ring with an ethyl group on one ring carbon and an OH group on another] ?MediumSingle correctHas a figure
  22. 8 Apr 2025, Shift 2 · Q64Match the LIST-I with LIST-II LIST-I | LIST-II A. Carbocation | I. Species that can supply a pair of electrons. B. C-Free radical | II.…EasyMatch the list

2024 24 questions

  1. 6 Apr 2024, Shift 2 · Q72During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in…EasySingle correct
  2. 6 Apr 2024, Shift 2 · Q73The correct statement among the following, for a "chromatography" purification method is :MediumSingle correct
  3. 6 Apr 2024, Shift 2 · Q88Number of carbocations from the following that are not stabilized by hyperconjugation is ________.MediumNumerical valueHas a figure
  4. 8 Apr 2024, Shift 1 · Q74Given below are two statements: Statement I: [figure: Compound A, a benzene ring bearing Cl, and two NO2\mathrm{NO_2} groups] IUPAC name of…EasyTwo statementsHas a figure
  5. 8 Apr 2024, Shift 1 · Q75In the given compound, the number of 2∘2^\circ carbon atom/s is ____________.…EasySingle correctHas a figure
  6. 9 Apr 2024, Shift 1 · Q70Methods used for purification of organic compounds are based on :EasySingle correct
  7. 9 Apr 2024, Shift 1 · Q71Relative stability of the contributing structures is : (I) CH2=CH−C∥O¨:−H\mathrm{CH_2=CH-\overset{\ddot{O}:}{\overset{\|}{C}}-H} ⟷\longleftrightarrow…MediumSingle correctHas a figure
  8. 9 Apr 2024, Shift 1 · Q74In the following sequence of reaction, the major products B and C respectively are : [figure: Cl-cyclobutane-Br (1,3-disubstituted…HardSingle correctHas a figure
  9. 9 Apr 2024, Shift 1 · Q89How many compounds among the following compounds show inductive, mesomeric as well as hyperconjugation effects ? [figure: eight…MediumNumerical valueHas a figure
  10. 9 Apr 2024, Shift 2 · Q73The correct stability order of the following resonance structures of CH3−CH=CH−CHO\mathrm{CH_3-CH=CH-CHO} is I:…MediumSingle correctHas a figure
  11. 9 Apr 2024, Shift 2 · Q88In the given TLC, the distance of spot A & B are 5 cm & 7 cm, from the bottom of TLC plate, respectively. RfR_f value of B is…MediumNumerical valueHas a figure
  12. 29 Jan 2024, Shift 1 · Q71Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with FeSO4\mathrm{FeSO_4} in presence of…MediumSingle correct
  13. 29 Jan 2024, Shift 1 · Q72The interaction between π\pi bond and lone pair of electrons present on an adjacent atom is responsible forEasySingle correct
  14. 29 Jan 2024, Shift 1 · Q73The difference in energy between the actual structure and the lowest energy resonance structure for the given compound isEasySingle correct
  15. 29 Jan 2024, Shift 1 · Q88Number of compounds among the following which contain sulphur as heteroatom is ________. Furan, Thiophene, Pyridine, Pyrrole, Cysteine,…EasyNumerical value
  16. 30 Jan 2024, Shift 2 · Q72Which among the following purification methods is based on the principle of "Solubility" in two different solvents?EasySingle correct
  17. 30 Jan 2024, Shift 2 · Q73The correct stability order of carbocations isEasySingle correct
  18. 30 Jan 2024, Shift 2 · Q74IUPAC name of following compound is : CH3−CH−CH2−CN\mathrm{CH_3-CH-CH_2-CN} with NH2\mathrm{NH_2} on the CH carbonEasySingle correctHas a figure
  19. 30 Jan 2024, Shift 2 · Q87Number. of geometrical isomers possible for the given structure is/are ________.MediumNumerical valueHas a figure
  20. 31 Jan 2024, Shift 1 · Q71'Adsorption' principle is used for which of the following purification method?EasySingle correct
  21. 31 Jan 2024, Shift 1 · Q72Match List I with List II LIST I (Technique) A. Distillation B. Fractional distillation C. Steam distillation D. Distillation under…MediumMatch the list
  22. 31 Jan 2024, Shift 1 · Q74A species having carbon with sextet of electrons and can act as electrophile is calledEasySingle correct
  23. 31 Jan 2024, Shift 1 · Q75Given below are two statements: Statement I: IUPAC name of HO−CH2−(CH2)3−CH2−COCH3\mathrm{HO-CH_2-(CH_2)_3-CH_2-COCH_3} is 7-hydroxyheptan-2-one. Statement II:…EasyTwo statements
  24. 31 Jan 2024, Shift 2 · Q72The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally…EasySingle correct

2023 5 questions

  1. 6 Apr 2023, Shift 1 · Q74Match List I with List II LIST I (Element detected) | LIST II (Reagent used / Product formed) A. Nitrogen | I. Na2[Fe(CN)5NO]\mathrm{Na_2[Fe(CN)_5NO]}…MediumMatch the list
  2. 8 Apr 2023, Shift 2 · Q72The correct IUPAC nomenclature for the following compound is: [structure: CH3−CO−CH2−CH2−CH(COOH)−CH3\mathrm{CH_3{-}CO{-}CH_2{-}CH_2{-}CH(COOH){-}CH_3}]EasySingle correctHas a figure
  3. 11 Apr 2023, Shift 1 · Q72Thin layer chromatography of a mixture shows the following observation: The correct order of elution in the silica gel column…MediumDiagram basedHas a figure
  4. 13 Apr 2023, Shift 2 · Q74Given below are two statements : Statement I : Tropolone is an aromatic compound and has 8 π\pi electrons. Statement II : π\pi electrons…HardTwo statements
  5. 13 Apr 2023, Shift 2 · Q900.400 g of an organic compound (X) gave 0.376 g of AgBr in Carius method for estimation of bromine. % of bromine in the compound (X) is…EasyNumerical value

2022 10 questions

  1. 25 Jul 2022, Shift 1 · Q88While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from 0.250.25 g of the compound…EasyNumerical value
  2. 25 Jul 2022, Shift 1 · Q89The number of sp3\mathrm{sp^3} hybridised carbons in an acyclic neutral compound with molecular formula C4H5N\mathrm{C_4H_5N} is ______.MediumNumerical value
  3. 28 Jul 2022, Shift 1 · Q72Match List - I with List - II. List - I | List - II (A) [figure: five-membered saturated ring containing one O atom…MediumMatch the listHas a figure
  4. 28 Jul 2022, Shift 1 · Q74Among the following marked proton of which compound shows lowest pKa\mathrm{pK_a} value ?MediumSingle correctHas a figure
  5. 28 Jul 2022, Shift 1 · Q90On complete combustion of 0.492 g of an organic compound containing C, H and O, 0.7938 g of CO2\mathrm{CO_2} and 0.4428 g of…EasyNumerical value
  6. 24 Jun 2022, Shift 1 · Q80During the qualitative analysis of salt with cation y2+y^{2+}, addition of a reagent (X) to alkaline solution of the salt gives a bright…EasySingle correct
  7. 24 Jun 2022, Shift 1 · Q88A 0.166 g sample of an organic compound was digested with conc. H2SO4\mathrm{H_2SO_4} and then distilled with NaOH. The ammonia gas evolved…MediumNumerical value
  8. 24 Jun 2022, Shift 1 · Q89Number of electrophilic centres in the given compound is ______.MediumNumerical valueHas a figure
  9. 29 Jun 2022, Shift 1 · Q88Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound…EasyNumerical value
  10. 29 Jun 2022, Shift 1 · Q89Observe structures of the following compounds [figure: five structures] The total number of structures/compounds which possess asymmetric…EasyNumerical valueHas a figure

2021 8 questions

  1. 3 Aug 2021, Shift 2 · Q42In the detection of nitrogen in an organic compound by Lassaigne's test, the iron compounds formed areMediumSingle correct
  2. 3 Aug 2021, Shift 2 · Q44The correct structure of ciscis–2,4-dimethylhept-3-ene is,MediumDiagram basedHas a figure
  3. 3 Aug 2021, Shift 2 · Q59The number of electrophiles in the list below is ‾\underline{\hspace{2em}}. (Integer answer)…MediumNumerical value
  4. 25 Jul 2021, Shift 1 · Q41Which one among the following resonating structures is not correct ?MediumDiagram basedHas a figure
  5. 16 Mar 2021, Shift 2 · Q41Match List-I with List-II : List-I (Test/Reagents/Observation(s)) (a) Lassaigne's Test (b) Cu(II) oxide (c) Silver nitrate (d) The sodium…MediumMatch the list
  6. 16 Mar 2021, Shift 2 · Q60In Duma's method of estimation of nitrogen, 0.1840 g of an organic compound gave 30 mL of nitrogen collected at 287 K and 758 mm of Hg…MediumNumerical value
  7. 18 Mar 2021, Shift 1 · Q42Compound with molecular formula C3H6O\mathrm{C_3H_6O} can show :EasySingle correct
  8. 18 Mar 2021, Shift 1 · Q50Reagent, 1-naphthylamine and sulphanilic acid in acetic acid is used for the detection of :MediumSingle correct

2020 5 questions

  1. 8 Jan 2020, Shift 1 · Q40A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63 ∘^\circC while the other boils at 60…EasySingle correct
  2. 2 Sep 2020, Shift 1 · Q39The IUPAC name for the following compound is :EasyDiagram basedHas a figure
  3. 2 Sep 2020, Shift 1 · Q40In Carius method of estimation of halogen, 0.172 g of an organic compound showed presence of 0.08 g of bromine. Which of these is the…MediumDiagram basedHas a figure
  4. 6 Sep 2020, Shift 2 · Q31The IUPAC name of the following compound is :MediumSingle correctHas a figure
  5. 6 Sep 2020, Shift 2 · Q32Match the following : Test / Method — Reagent (i) Lucas Test (a) C6H5SO2Cl\mathrm{C_6H_5SO_2Cl} / aq. KOH (ii) Dumas method (b) HNO3\mathrm{HNO_3}…MediumMatch the list

2017 1 questions

  1. 2 Apr 2017 (offline) · Q54Which of the following molecules is least resonance stabilized ?MediumSingle correctHas a figure

Pattern: Asked most years.