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 ?

Q: 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 ?

a (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 $\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}$ means $\mathrm{N}$ is absent. So it can't be Aspartame or Saccharine or Alitame, so $\mathrm{C}$ is sucralose. (iii) Lassaigne solution of $B$ and $D$ given $+ve$ sodium nitroprusside test, so it is having $S$, so it is Saccharine and Alitame.

Question

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 ?

A$A $: Aspartame ; $B $: Saccharin ; $C $: Sucralose ;$ D $; Alitame
B$A$ : Alitame ; $B $: Saccharin ; $C$ : Aspartame ; $D$ ; Sucralose
C$A$ : Saccharin ; $B$ : Alitame ; $C$ : Sucralose ; $D$ ; Aspartame
D$A$ : Aspartame ; $B$ : Alitame ; $C$ : Saccharin ;$ D$ ; Sucralose

JEE MAIN 2020, Advanced

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