Question

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Answer 1

Answer:

i- copper sulphate solution use for copper refining process (The metal industry uses large quantities of copper sulphate as an electrolyte in copper refining, for copper coating steel wire prior to wire drawing and in various copper plating processes The mining industry employs it as an activator in the concentration by froth flotation of lead, zinc, cobalt and gold ores)

ii- Needle compass use for conductor liquid of electric current (compass needle is deflected on passing an electric current through a metallic conductor We see that the needle is deflected.)

Explanation: