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Alkenes: geometrical isomerism, electrophilic addition, Markovnikov and peroxide effect

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Every question from past board papers on Alkenes: geometrical isomerism, electrophilic addition, Markovnikov and peroxide effect, newest paper first. Open any question for its full worked answer.

NEET UG 2025 question paper (official, booklet 45)

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  1. Which one of the following compounds does not decolourize bromine water?

    (1) cyclohexane ring; (2) phenol; (3) styrene; (4) aniline

    4 marks · See worked answer →

NEET UG 2021 question paper (official, booklet M4)

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  1. The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on ?

    4 marks · See worked answer →

  2. The major product of the following chemical reaction is :

    \((CH_3)_2CH-CH=CH_2 + HBr \xrightarrow{(C_6H_5CO)_2O_2} ?\)

    reaction of 3-methylbut-1-ene with HBr/peroxide and four structure options

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NEET UG 2016 Phase 2 question paper (official, booklet ZZ)

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  1. The compound that will react most readily with gaseous bromine has the formula

    4 marks · See worked answer →