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(i) Crystals of copper sulphate are heated in a test tube for some time.(a) What is the colour of copper sulphate crystals before heating, and after heating?(b) What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process(ii) A metal 'X' when dipped inaqueous solution of aluminium sulphate no reaction is observed whereas when it is dipped in an aqueous solution of ferrous sulphate, the pale green solution turns colourless. Identify metal 'X' with reason |
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Answer» (i) (a) The colour of copper sulphate crystals before heating is blue and turns after heating. Therefore, 'X' must be zinc. It reacts with ferrous sulphate to form colourless zinc sulphate solution by displacing iron. |
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