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Friday, 9 October

JEE Main Chemistry · Haloalkanes and Haloarenes

SN1 and SN2 Mechanisms in JEE Main

SN1 and SN2 Mechanisms (Chemistry, Haloalkanes and Haloarenes) came 17 times in 17 of the 42 JEE Main shifts Lumi analysed, across 9 distinct ideas. 11 of them came in 2024–26; it was last asked in 2026.

Questions
17
in 17 shifts
Ideas asked
9
5 asked more than once
Numerical answer
1
6% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0361’170’201’211’223’236’241’254’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 6Medium 9Hard 2

Format

  • Diagram based5 Q
  • Single correct4 Q
  • Match the list3 Q
  • Two statements2 Q
  • Numerical value1 Q
  • Assertion–reason1 Q
  • Other1 Q
Ideas inside the topic
9 ideas
Where it sits

Part of Haloalkanes and Haloarenes, which had 62 questions in all. SN1 and SN2 Mechanisms accounts for 27% of them. In Lumi's JEE taxonomy it belongs to Organic Chemistry.

Some questions sit in other chapters too: Organic Chemistry: Some Basic Principles and Techniques.

Every question

All 17 SN1 and SN2 Mechanisms questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q64Given below are two statements : Statement (I) : Benzyl chloride reacts faster in SN1\mathrm{S_N1} mechanism than ethyl chloride. Statement…EasyTwo statements
  2. 2 Apr 2026, Shift 2 · Q65Correct statements regarding alkyl halides (R - X) among the following are: A. Alcohol being less polar solvent as compared to water,…MediumSingle correct
  3. 4 Apr 2026, Shift 1 · Q65Match the LIST-I with LIST-II List-I (Name of reaction): A. Finkelstein reaction; B. Swarts reaction; C. Sandmeyer's reaction; D. Fittig…EasyMatch the list
  4. 8 Apr 2026, Shift 2 · Q63The major product of which of the following reaction is not obtained by rearrangement reaction ?MediumDiagram basedHas a figure
  5. 2 Apr 2025, Shift 2 · Q67Match List - I with List - II. List - I (Reaction) (A)…EasyMatch the listHas a figure
  6. 6 Apr 2024, Shift 2 · Q76Chemical reaction: (1-chloropropyl)cyclohexane [cyclohexyl ring attached to CHCl-CH2-CH3] ++ NaOH →H2O\xrightarrow{\mathrm{H_2O}} Major…MediumDiagram basedHas a figure
  7. 8 Apr 2024, Shift 1 · Q77Which among the following compounds will undergo fastest SN2\mathrm{S_N2} reaction.EasyDiagram basedHas a figure
  8. 9 Apr 2024, Shift 1 · Q73Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : SN2\mathrm{S_N2}…EasyAssertion–reason
  9. 9 Apr 2024, Shift 2 · Q75[figure: C6H5−CH(CH3)−CH(OCH3)−Br\mathrm{C_6H_5-CH(CH_3)-CH(OCH_3)-Br} (benzylic carbon bearing CH3_3, next carbon bearing both OCH3_3 and Br)]…HardSingle correctHas a figure
  10. 30 Jan 2024, Shift 2 · Q75Given below are two statements: Statement - I: High concentration of strong nucleophilic reagent with secondary alkyl halides which do not…MediumTwo statements
  11. 31 Jan 2024, Shift 1 · Q88CH3CH2Br+NaOH\mathrm{CH_3CH_2Br + NaOH} with C2H5OH\mathrm{C_2H_5OH} gives Product A, and with H2O\mathrm{H_2O} gives Product B. The total number of…EasyNumerical valueHas a figure
  12. 6 Apr 2023, Shift 1 · Q75For the reaction RCH2Br+I−→AcetoneRCH2Imajor+Br−\mathrm{RCH_2Br + I^-}\xrightarrow{\text{Acetone}}\underset{\text{major}}{\mathrm{RCH_2I}}+\mathrm{Br^-} The correct…HardSingle correct
  13. 11 Apr 2023, Shift 1 · Q74[figure: Reaction (I): 4-methoxybenzyl chloride (MeO−C6H4−CH2Cl\mathrm{MeO{-}C_6H_4{-}CH_2Cl}) + Nu gives 4-methoxybenzyl-Nu. Reaction (II):…MediumDiagram basedHas a figure
  14. 13 Apr 2023, Shift 2 · Q75Match List I with List II 1 - Bromopropane is reacted with reagents in List I to give product in List II LIST I - Reagent | LIST II -…MediumMatch the list
  15. 25 Jul 2022, Shift 1 · Q74Most stable product of the following reaction is : (i) p-toluenesulfonyl chloride (H3C−C6H4−SO2Cl\mathrm{H_3C{-}C_6H_4{-}SO_2Cl}), Pyridine (ii) NaCN,…MediumDiagram basedHas a figure
  16. 3 Aug 2021, Shift 2 · Q45Arrange the following halides in the increasing order of their reactivity towards SN1\mathrm{S_N1} reaction mechanism.MediumSingle correctHas a figure
  17. 2 Apr 2017 (offline) · Q55The increasing order of the reactivity of the following halides for the SN1\mathrm{S_N1} reaction is : CH3CHCH2CH3\mathrm{CH_3CHCH_2CH_3} with Cl on…MediumOtherHas a figure