Question

A, B, C and D are four artificial sweetners. (i) A & D give positive test with ninhydrin. (ii) C form precipitate with AgNO₃ in the lassaigne extract of the sugar. (iii) B & D give positive test with sodium nitroprusside. Correct option is:` 

(1) A – Saccharine, B – Aspartame, C – Sucralose, D – Alitame 

(2) A – Aspartame, B – Saccharine, C – Sucralose, D – Alitame 

(3) A – Saccharine, B – Aspartame, C – Alitame , D – Sucralose 

(4) A – Aspartame, B – Sucralose, C – Saccharine, D – Alitame

Answer 1

The answer is (1) A – Saccharine, B – Aspartame, C – Sucralose, D – Alitame

(i) A & D give positive test with ninhydrin because both have free carboxylic and amine groups. 

(ii) C form precipitate with AgNO₃ in the lassaigne extract of the sugar because it has chlorine atoms. 

(iii) B & D give positive test with sodium nitroprusside because both have sulphur atoms.