Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Aniline on nitration yields ortho, meta & para nitro derivatives of aniline.
Reason R: Nitrating mixture is a strong acidic mixture.
In the light of the above statements, choose the correct answer from the options given below
Assertion A: Aniline on nitration yields ortho, meta & para nitro derivatives of aniline.
Reason R: Nitrating mixture is a strong acidic mixture.
In the light of the above statements, choose the correct answer from the options given below
- (A)Both A and R are true and R is the correct explanation of A✓ Correct
- (B)Both A and R are true but R is NOT the correct explanation of A
- (C)A is true but R is false
- (D)A is false but R is true
Answer: (A)
Solution
Aniline's -NH₂ group is strongly activating and ortho/para directing. However, in the acidic nitrating mixture (conc. HNO₃ + H₂SO₄), aniline is protonated to form the anilinium ion (-NH₃⁺), which is meta-directing and deactivating. This results in a mixture of ortho, meta, and para products (with significant meta product). Both statements are true, and R correctly explains why meta product is also formed (A is true). Therefore, both A and R are true and R is the correct explanation of A.
JEE Main · 2022 · 28 Jul 2022 · Shift 2 · Single correct option