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1. |
A small iodine crystal is added to each of the following aq solutions: I. sodium sulphate II. Sodiumthiosulphate III. Sodium tetrathionate IV. Sulphuric acid In which solutions the purple colour disappersA. only in IB. only in I and IIC. only in III and IVD. only in II |
Answer» Correct Answer - D |
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