Question

If a zinc rod is dipped in copper sulphate solution, following change s will be noticed . Mark the correct observations.
A) Zinc rod slowiy loses its weight.
B)Copper settles at the bottom of beaker.
C)Blue colour of copper sulphate disappear

1) A and B
2) A, B and C
3) A and C
4) C only​

Answer 1

(c) Blue colour of copper sulphate disappear

Answer 2

The correct answer will be  option c.

Since the zinc ion discharges out from the rod and goes into the solution the zinc rod will become thinner.

The copper ion from the copper sulphate solution will settle on the rod ans hence the cupper rod will become thicker.

Since the copper ions from the solution goes to the rod the concentration of copper sulphate will reduce,thereof fading the blue color of the solution.