Question

D glucose and d fructose can be differentiated by which reagent

Answer 1

U can differentiate it by bromine water test it is one of the easiest way

Answer 2

Hey dear,
There are various tests to distinguish glucose and fructose.

● Bromine water test -
- When glucose is treated with bromine water, it forms gluconic acid which changes color of the solution.
- Being a weak oxidizing agent, bromine water is unable to oxidize fructose.

● Selivanoff's test -
- Fructose reacts with resorcinol in dil.HCl to give red/brown precipitate.
- Glucose gives negative Selovanoff's test.

● Furfural test -
- Fructose when heated with conc.HCl & alc.alpha napthol to give purple color.
- Glucose gives negative furfural test.

Hope this is helpful...