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Two drops of dilute sulphuric acid …

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Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and step II are: (a) physical and chemical changes respectively. (b) chemical and physical changes respectively. (c) both physical change. (d) both chemical change.

    • Posted by Anisha Nair 7 years, 8 months ago

    CBSE > Class 07 > Science
    • 0 answers
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