Question

crystal of copper sulphate are heated in a test for sometime what is the colour of copper sulphate crystal before heating and after heating what is a source of liquid droplets seen on the inner upper side of the test tube during the heating process​

Answer 1

colour of copper sulphate crystal before heating - blue

colour of copper sulphate crystal after heating - white

The liquid droplets appearing on the inner upper side of the test tube are the water molecules that evaporate on heating and condense on touching the cooler surface of the upper part of the test tube.