How can we differentiate between sodium bromide and sodium iodide

Sodium bromide is a chemical combination of bromine and iodine while sodium iodide is made up of sodium and iodine,you can also look at the difference in terms of boiling and melting poins

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.