The teacher wishes to show in laboratory that all the crystals will decompose to give water on heating, which is collected on the upper surface inside the test tube. Name any four compounds the teacher should use in the laboratory to perform this activity.

The teacher wishes to show in laboratory that all the crystals will de

1.	The teacher wishes to show in laboratory that all the crystals will decompose to give water on heating, which is collected on the upper surface inside the test tube. Name any four compounds the teacher should use in the laboratory to perform this activity.
Answer» SOLUTION :The TEACHER can USE the following four COMPOUNDS : (1) Blue vitrol, i.e., Copper sulphate (Blue crystalline salt) ( 2) Green vitrol, i.e., Iron sulphate (Green crystalline salt) (3) Sodium carbonate (White coloured CRYSTALS) ( 4) Calcium sulphate (White coloured crystals)