A violet colour is obtained on adding \( \mathrm{Cl}_{2} \) water i...

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A violet colour is obtained on adding \( \mathrm{Cl}_{2} \) water in solution of potassium halide in presence of
\( \mathrm{P} \)
chloroform and on adding excess of \( \mathrm{Cl}_{2} \) water,
W
violet colour disappears and colourless solution appears. The test shows the presence of
(1) Iodine ion
(2) Bromide ion
(3) Chloride ion
(4) Iodide and bromide ion
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