On heating copper sulphate crystals in a hard test tube it is observed that :
(a) The substance sublimes. (b) Brown fumes are evolved.
(b) A grey mass is formed. (d) A white residue is left.
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On heating copper sulphate crystals in a hard test tube it is observed that :
(a) The substance sublimes. (b) Brown fumes are evolved.
(b) A grey mass is formed. (d) A white residue is left.
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