Ferrous sulphate crystal are heated in dry test tube .list any two observation.
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6
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Change in color of crystals from green to brown. This is because of the ferrous sulfate crystals on heating will loose water molecules and turn to white which immediately turns brown due to formation of ferric oxide
Water droplet will be observed on the wall of the boiling tube. Removal of water molecules from the crystals will get condensed on the walls of boiling tube.
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2
Answer:
change colour
change in temperature
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