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
- 01
A 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 - 02
Given 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 - 03
Given 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 - 04
Grignard 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 - 05
Given below are two statements: Statement I: The conversion proceeds well in a less polar medium. CH₃CH₂CH₂CH₂Cl → HO⁻ CH₃CH₂CH₂CH₂OH + Cl⁻…
MCQEasyJEE 2025 - 06
Total number of nucleophiles from the following is: NH₃, PhSH, (H₃C₂S)₂, H₂C=CH₂, OH⁻, H₃O⁺, (CH₃)₂CO, NCH₃
MCQMediumJEE 2025 - 07
Match the LIST-I with LIST-II | LIST-I | | LIST-II | | --- | --- | --- | | A. Carbocation | I. | Species that can supply a pair of…
MCQEasyJEE 2025 - 08
A species having carbon with a sextet of electrons and can act as an electrophile is called:
MCQEasyJEE 2024 - 09
Given 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 - 10
Find out the major product for the following reaction: → Major Product
MCQMediumJEE 2023 - 11
The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement):
MCQMediumJEE 2023 - 12
Find out the major products from the following reaction sequence:
MCQMediumJEE 2023 - 13
In the following reaction, ‘A’ is:
MCQMediumJEE 2023 - 14
Choose the halogen which is most reactive towards S_N1 reaction in the given compounds (A, B, C, & D):
MCQMediumJEE 2023 - 15
Identify the correct order of reactivity for the following pairs towards the respective mechanism:
MCQMediumJEE 2023 - 16
Find 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 - 18
The number of possible isomeric products formed when 3-chloro-1-butene reacts with HCl through carbocation formation is.
NVAMediumJEE 2023 - 19
The compound shown below undergoes the following reactions: CH₃-CO-CH₂-CHBr-CH₃ → [ (ii) H₂O ] (i) Mg 'A' (Major Product) (that is,…
MCQMediumJEE 2023 - 20
The incorrect statement regarding the reaction given below is:
MCQMediumJEE 2023
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