JEE Chemistry
Reaction Mechanisms (Substitution, Addition, Elimination): JEE Questions & Solutions
20 previous-year JEE Chemistry questions on Reaction Mechanisms (Substitution, Addition, Elimination), each with a worked step-by-step solution.
Previous-year questions
- 01A is a neutral organic compound (M.F.: C₈H₉ON). On treatment with aqueous Br₂/HO⁻, A forms a compound B which is soluble in dilute acid. B…MCQMediumJEE 2026
- 02Given below are two statements: Statement I: C–Cl bond is stronger in CH₂ = CH-Cl than in CH₃-CH₂-Cl. Statement II: The given optically…MCQMediumJEE 2026
- 03Given below are two statements: Statement I: The dipole moment of R–CN is greater than R–NC and R–NC can undergo hydrolysis under acidic…MCQMediumJEE 2026
- 04Grignard reagent RMgBr (P) reacts with water and forms a gas (Q). One gram of Q occupies 1.4 dm³ at STP. (P) on reaction with dry ice in…NVAMediumJEE 2026
- 05Given below are two statements: Statement I: The conversion proceeds well in a less polar medium. CH₃CH₂CH₂CH₂Cl → HO⁻ CH₃CH₂CH₂CH₂OH + Cl⁻…MCQEasyJEE 2025
- 06Total number of nucleophiles from the following is: NH₃, PhSH, (H₃C₂S)₂, H₂C=CH₂, OH⁻, H₃O⁺, (CH₃)₂CO, NCH₃MCQMediumJEE 2025
- 07Match the LIST-I with LIST-II | LIST-I | | LIST-II | | --- | --- | --- | | A. Carbocation | I. | Species that can supply a pair of…MCQEasyJEE 2025
- 08A species having carbon with a sextet of electrons and can act as an electrophile is called:MCQEasyJEE 2024
- 09Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Acetal/Ketal is stable…MCQEasyJEE 2023
- 10Find out the major product for the following reaction: → Major ProductMCQMediumJEE 2023
- 11The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement):MCQMediumJEE 2023
- 12Find out the major products from the following reaction sequence:MCQMediumJEE 2023
- 13In the following reaction, ‘A’ is:MCQMediumJEE 2023
- 14Choose the halogen which is most reactive towards S_N1 reaction in the given compounds (A, B, C, & D):MCQMediumJEE 2023
- 15Identify the correct order of reactivity for the following pairs towards the respective mechanism:MCQMediumJEE 2023
- 16Find out the correct statement from the options given below for the above 2 reactions.MCQMediumJEE 2023
- 17(R = alkyl) 'A' and 'B' in the above reactions are:MCQMediumJEE 2023
- 18The number of possible isomeric products formed when 3-chloro-1-butene reacts with HCl through carbocation formation is.NVAMediumJEE 2023
- 19The compound shown below undergoes the following reactions: CH₃-CO-CH₂-CHBr-CH₃ → [ (ii) H₂O ] (i) Mg 'A' (Major Product) (that is,…MCQMediumJEE 2023
- 20The incorrect statement regarding the reaction given below is:MCQMediumJEE 2023
Frequently asked questions
Our bank has 20 previous-year JEE Chemistry questions tagged to Reaction Mechanisms (Substitution, Addition, Elimination), drawn from JEE papers between 2023 and 2026, including 4 from 2026 alone. Each comes with a full step-by-step solution.
Reaction Mechanisms (Substitution, Addition, Elimination) is rated Advanced overall for JEE Chemistry. The PYQs on this page break down as 16 medium, 4 easy.
Of the 20 previous-year questions on Reaction Mechanisms (Substitution, Addition, Elimination), 18 are multiple-choice (MCQ) and 2 are numerical-value (NVA) questions.
Based on recent paper analysis, Reaction Mechanisms (Substitution, Addition, Elimination) is worth about 1 mark in JEE Main. It sits in Basic Principles of Organic Chemistry, a Class 11 Chemistry chapter.
More Basic Principles of Organic Chemistry topics
Master Reaction Mechanisms (Substitution, Addition, Elimination) with AI-adaptive practice.
Practice unlimited Reaction Mechanisms (Substitution, Addition, Elimination) questions, track your mastery, and get every step explained by an AI tutor.