Double Displacement Reaction Activity Take about 3 mL of sodium sulphate solution in a test tube. In another test tube, take about 3 mL of barium chloride solution. Mix the two solutions (Fig. 1.9). What do you observe?

Displacement Reaction Activity Take three iron nails and clean them by rubbing with sand paper. Take two test tubes marked as (A) and (B). In each test tube, take about 10 mL copper sulphate solution. Tie two iron nails with a thread and immerse them carefully in the copper sulphate solution in test tube B…