Devise a Method to Identifying the Cation and Anion : Alkaline Earth Cation

How to identify a solution containing an alkaline earth cation using only two tests and halide anion using one test, which should require only one halogen plus starch?

Look carefully at the results of the alkaline earth tests and describe how to identify an alkaline earth cation using only two tests.

Look at the results of the halogen tests and describe how to identify one of the three halide ions by using only one halogen.