Q4 / 90 · JEE Main 2021 (31 Aug Shift 1) · Chemistry

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Treatment of bromine water with propene yields 1-bromopropan-2-ol.
Reason (R) : Attack of water on bromonium ion follows Markovnikov rule and results in 1-bromopropan-2-ol.
In the light of the above statements, choose the most appropriate answer from the options given below :

  • A
    Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  • B
    (A) is false but (R) is true.
  • Correct answer
    C
    Both (A) and (R) are true and (R) is the correct explanation of (A ).
  • D
    (A) is true but (R) is false.

Solution

Figure

Markovnikov's rule of addition : In an electrophilic addition reaction to alkenes and alkynes the electrophile attacks in such a way that a more stable carbocation intermediate is formed on which nucleophile attacks in the next step.

Hence, the correct answer is option: 'C'.

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