How can a student test for the prescence of a halide ion?

Add a drop of each liquid to individual test tubes.To each test tube, add dilute nitric acid and silver nitrate solution.A precipitate will form for each ion present.chloride= whitebromide= creamiodide= yellowto distinguish between bromide and iodide, add concentrated ammonia solution - the bromide ions will dissolve whereas the iodide ions will not