JEE Main 2021 · ChemistryMultiple choiceDiagram basedMediumApplication
JEE Main 3 August 2021, Shift 1, Chemistry Q46
Question 46 of 90 in this shift, Chemistry question 16 of 30, Section A.
Sulphanilic acid on diazotisation and then reaction with N,N–dimethylaniline gives which of the following? Mark if their common name is correctly matched.
The figure, in words
Each option is a drawn structure followed by a printed dash and a name.- (1)[figure: benzene ring bearing O3S– at one position and –N+≡N Cl– at the adjacent position, which is also bonded by a single bond to a second benzene ring carrying –N(CH3)2 at its para position] – Orange-II
- (2)[figure: O3S–C6H4– (para) –N=N–N+(CH3)2–C6H5, i.e. a sulfonated benzene ring joined through N=N to a positively charged N bearing two CH3 and a phenyl ring] – Pink-I dye
- (3)[figure: O3S on a benzene ring, N=N to a second benzene ring whose adjacent (ortho) carbon carries N(CH3)2] – Para red
- (4)[figure: O3S–C6H4–N=N–C6H4–N(CH3)2, both rings para-substituted] – Methyl orangeOfficial answer
Official answer
Option 4
NTA final key.
- Chapter
- Amines
- Topic
- Diazonium Salts
- Idea tested
- Azo Coupling Reactions