Complete the following reaction : when iron is treated with copper sulphate solution.

Complete the following reaction : when lead oxide is treated with carbon

Give the reaction which occur when zinc plate is added to copper sulphate solution

Complete the reaction : barium chloride is treated with aluminium sulphate.

formula of copper sulphate

• 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 for about 20 minutes [Fig. (a)]. Keep one iron nail aside for comparison. • After 20 minutes, take out the iron nails from the copper sulphate solution. • Compare the intensity of the blue colour of copper sulphate solutions in test tubes (A) and (B) (Fig. (b)]. Also, compare the colour of the iron nails dipped in the copper sulphate solution with the one kept aside [Fig. - (b)]. On the basis of activity , give the answers of th following questions : What is the colour of copper sulphat solution in test tube A ?

what happen when a piece of zinc is added to copper sulphate solution?