Alkenes (Electrophilic Addition, Polymerisation): JEE Questions & Solutions
19 previous-year JEE Chemistry questions on Alkenes (Electrophilic Addition, Polymerisation), each with a worked step-by-step solution.
Previous-year questions
- 01
The cycloalkene (X) on bromination consumes one mole of bromine per mole of (X) and gives the product (Y) in which C: Br ratio is 3:1. The…
NVAMediumJEE 2026 - 02
Arrange the following alkenes in the decreasing order of stability: Choose the correct answer from the options given below:
MCQEasyJEE 2026 - 03
Consider the reaction: Ph–CH=CH2 [ peroxide] HBr Product Which of the following statements are correct? [A.] The reaction proceeds through…
MCQMediumJEE 2026 - 04
Match List-I with List-II. List-I Isomers of C10H14 List-II Ozonolysis product (A) Cyclohexene derivative (I) Aldehyde product (B)…
MCQMediumJEE 2025 - 05
Following are the four molecules P, Q, R and S. Which one among the four molecules will react with H-Br(aq) at the fastest rate? Molecules:…
MCQMediumJEE 2025 - 06
Total number of sigma () and pi () bonds respectively present in hex-1-en-4-yne are:
MCQEasyJEE 2025 - 07
Which compound would give 3-methyl-6-oxoheptanal upon ozonolysis ?
MCQMediumJEE 2025 - 08
Given below are two statements: Statement I: Ozonolysis followed by treatment with Zn, H2 O of cis-2-butene gives ethanal. Statement II:…
MCQMediumJEE 2025 - 09
The reactions which cannot be applied to prepare an alkene by elimination, are Choose the correct answer from the options given below:
MCQMediumJEE 2025 - 10
The number of optically active products obtained from the complete ozonolysis of the given compound is:
MCQMediumJEE 2025 - 11
Cyclohexene is a type of an organic compound:
MCQEasyJEE 2024 - 12
3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for 'A'…
NVAMediumJEE 2024 - 13
Which of the following reaction is correct?
MCQEasyJEE 2024 - 14
17 mg of a hydrocarbon (Molecular Formula: C10 H16) takes up 8.40 mL of H2 gas measured at 0^ C and 760 mmHg. Ozonolysis of the hydrocarbon…
NVAEasyJEE 2023 - 15
Choose the correct set of reagents for the following conversion trans (Ph-CH=CH-CH3) cis (Ph-CH=CH-CH3)
MCQMediumJEE 2023 - 16
A hydrocarbon ‘X’ with formula C6H8 uses two moles of H2 on catalytic hydrogenation of its one mole. On ozonolysis, ‘X’ yields two moles of…
MCQMediumJEE 2023 - 17
But-2-yne is reacted separately with one mole of Hydrogen as shown below: B Na, liquid NH3 CH3 C CH + H2 Pd/C A A. A is more soluble than…
MCQMediumJEE 2023 - 18
'X' is:
MCQMediumJEE 2023 - 19
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MCQEasyJEE 2023
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