There are two test tubes one containing salt and other containing sugar both appear same as they are in powdered form. Device a method of identifying the substance without tasting them

There are two ways to tell the difference between salt and sugar without tasting either one of them. One way is to place them separately in separate pans, and cook them. Sugar has a higher boiling point than does salt. When heated sugar will melt into a brown syrupy sustains Salt will not melt.

1.  Salt solution is conductor of electricity.
2. Boiling point differences