Q13 / 75 · JEE Main 2026 (02 April Shift 2) · Chemistry

Given below are two statements:
Statement I: In $O_2 N$-$C_6 H_4$-$CH^{\oplus}$-$C_6 H_4$-$OCH_3$, the carbocation is stabilised by $+R$ effect of $-OCH_3$ group.
Statement II: In $O_2 N$-$C_6 H_4$-$CH^{\ominus}$-$C_6 H_4$-$OCH_3$, the carbanion is stabilised by $-R$ effect of $-NO_2$ group.
In the light of the above statements, choose the correct answer from the options given below:

  • Correct answer
    A
    Both Statement I and Statement II are true
  • B
    Both Statement I and Statement II are false
  • C
    Statement I is true but Statement II is false
  • D
    Statement I is false but Statement II is true

Solution

Statement I is true because the $-OCH_3$ group is an electron-donating group. It donates electron density through resonance ($+R$ effect), which delocalizes the positive charge of the carbocation and stabilizes it.

Statement II is true because the $-NO_2$ group is a strong electron-withdrawing group. It withdraws electron density through resonance ($-R$ effect), which delocalizes the negative charge of the carbanion and stabilizes it.

Therefore, both Statement I and Statement II are true.

Answer: Both Statement I and Statement II are true

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

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