Why does the colour of copper sulphate solution change when

Heat a few crystals of copper sulphatein a dry boiling tube.n What is the colour of the coppersulphate after heating?n Do you notice water droplets in theboiling tube? Where have these comefrom?n Add 2-3 drops of water on the sampleof copper sulphate obtained afterheating.n What do you observe? Is the bluecolour of copper sulphate restored?

The colour of the solution observed after 30 minutes of placing zinc metal to coppersulphate solution isa) Blueb) Colourlessc) Dirty greend) Reddish Brown

The salt copper sulphate can be prepared by reacting copper oxide with sulphuric acid complete the list of instructions for making copper sulphate down below are six words blue,saturate, dilute, filter, white and oxide 1. add excess copper oxide to dilute sulphuric acid and boil it 2. Filter to remove the unreacted copper oxide 3. Heat the solution until it is Saturated 4. ------------ the solution to form blue coloured crytsal of copper  ----------------

On placing a copper coin in a test tube containing green ferrous sulphate solution, it willbe observed that the ferrous sulphate solution(a) turns blue, and a grey substance is deposited on the copper coin.(b) turns colourless and a grey substance is deposited on the copper coin.(c) turns colourless and a reddish–brown substance is deposited on the copper coin.(d) remains green with no change in the copper coin.

1. add excess copper oxide to dillute​ sulphuric acid and boil it 2. Filter to remove the unreacted copper oxide 3. Heat the solution until it is White4. Saturate the solution to form blue coloured crytsal of copper oxide