Which of the following can be used as a laboratory method to differentiated glucose from fructose?

Seliwanoff's Test: It's used to tell the aldose from the ketose. Given that fructose is a ketose and glucose is an aldose, it follows that we can distinguish between them using Seliwanoff's test. ${\mathrm{Br}}_2+{\mathrm{H}}_2\mathrm{O}$  can also be used as a laboratory method to differentiated glucose from fructose.