JEE PYQ: Haloalkanes And Haloarenes Question 6
Question 6 - 2020 (04 Sep Shift 1)
The decreasing order of reactivity of the following organic molecules towards $\text{AgNO}_3$ solution is:
(A) Chlorocyclopropane (B) Chlorocyclopropane with OMe group (C) $\text{CH}_3\text{CHClCH}_3$ (D) $\text{CH}_3\text{CH}(\text{Cl})\text{CH}_2\text{NO}_2$
(1) (C) > (D) > (A) > (B)
(2) (A) > (B) > (D) > (C)
(3) (A) > (B) > (C) > (D)
(4) (B) > (A) > (C) > (D)
Show Answer
Answer: (4)
Solution
Given reaction is $\text{S}_\text{N}1$ reaction. Rate of reaction $\propto$ stability of $\text{C}^+$. Carbocation (B) stabilized by aromatic character and lone pair of $-\text{OMe}$ is most stable. Reactivity order: B > A > C > D.
BETA
