question_answer

  (a) A student took four test tubes containing solutions of different colours marked I, II, III and IV as shown below. Which test tubes could be containing copper sulphate solution and ferrous sulphate solution? (b) A student performed the following four experiments. In which experiments, would he find the formation of a solid deposition?

Answer:

  (a) Test tube II contains copper sulphate solution as it is blue is colour and IV contains ferrous sulphate solution as it is pale green in colour.                                                                                                                   (b) In experiments I, II and III, he would observe the solid deposition because Al, Zn and Fe are more reactive than Cu. They will displace Cu from CuSO4 solution.                                                                                                    (1)