When ferrous sulphate (Green Vitrol) is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:
(a) Green to White (pale yellow)
(b) Green to red.
(c) Green to blue.
(d) Blue to green.
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Answer : i think b is correct
Explanation: because fe2o3 is reddish brown right ..
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