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JEE Mains · Chemistry · STD 12 - 10. Biomolecules

A chemist has \(4\) samples of artificial sweetner \(A\). \(\mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\). To identify these samples, he performed certain experiments and noted the following observations : \((i)\) \(A\) and \(D\) both form blue-violet colour with ninhydrin. \((ii)\) Lassaigne extract of \(\mathrm{C}\) give  positive \(\mathrm{AgNO}_{3}\) test and negative \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\) test. \((iii)\) Lassaigne extract of \(\mathrm{B}\) and D gives positive sodium nitroprusside test Based on these observations which option is correct ?

  1. A \(A \): Aspartame ; \(B \): Saccharin ; \(C \): Sucralose ;\( D \); Alitame
  2. B \(A\) : Alitame ; \(B \): Saccharin ; \(C\) : Aspartame ; \(D\) ; Sucralose
  3. C \(A\) : Saccharin ; \(B\) : Alitame ; \(C\) : Sucralose ; \(D\) ; Aspartame
  4. D \(A\) : Aspartame ; \(B\) : Alitame ; \(C\) : Saccharin ;\( D\) ; Sucralose
Verified Solution

Answer & Solution

Correct Answer

(A) \(A \): Aspartame ; \(B \): Saccharin ; \(C \): Sucralose ;\( D \); Alitame

Step-by-step Solution

Detailed explanation

(i) Blue voilet color with Ninhydrine \(\rightarrow\) amino acid derivative. So it cannot be saccharide or sucralose. (ii) Lassaigne extract give + ve test with \(\mathrm{AgNO}_{3} .\) So \(\mathrm{Cl}\) is present, -ve test with…
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