- Exam
- JEE Main
- Year
- 2024
- Date
- 31 January
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Amines
JEE Main 2024 · 31 January · Evening Shift · Chemistry · Amines
Given below are two statements : Statement I: Aniline reacts with...
Given below are two statements :
Statement I: Aniline reacts with con. followed by heating at gives p-aminobenzene sulphonic acid, which gives blood red colour in the 'Lassaigne's test'.
Statement II: In Friedel - Craft's alkylation and acylation reactions, aniline forms salt with the catalyst. Due to this, nitrogen of aniline acquires a positive charge and acts as deactivating group.
In the light of the above statements, choose the correct answer from the options given below :
Options
- AStatement I is false but statement II is true
- BBoth statement I and statement II are false
- CStatement I is true but statement II is false
- DBoth statement I and statement II are true
Correct answer
D. Both statement I and statement II are true
Step-by-step solution
Aniline reacts with followed by heating at gives p-aminobenzene sulphonic acid, which gives blood red colour in the 'Lassaigne's test'Nitrogen, sulphur, and halogens present in organic compounds are detected by Lassaigne's test. Here, a small piece of Na metal is heated in a fusion tube with the organic compound. The principle is that, in doing so, Na converts all the elements present into ionic form.
Aniline does not undergo Friedel-Crafts reaction (alkylation and acetylation) due to salt formation with aluminium chloride, the Lewis acid, which is used as a catalyst. Due to this, nitrogen of aniline acquires positive charge and hence acts as a strong deactivating group for further reaction.