When water was added to a white anhydrous substance X, th...
When water was added to a white anhydrous substance X, the colour changed to blue. X is
CuSO4
FeSO4
Na2SO4
PbSO4
Correct answer is A
When water is added to white coloured anhydrous copper sulphate, its colour changes to blue, indicating that the blue coloured copper sulphate pentahydrate is regenerated.
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