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Monosaccharides

When chlorine...

Question

When chlorine gas is passed throgh an aqueous solution of a potassium halide in the presence of chloroform, a voilet colouration is obtained. On passing more of chlorine water, the voilet colour is disappered and solution becomes colourless. This test confirms the presence of ....... in aqueous solution.

A

chlorine

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B

fluorine

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C

bromine

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D

iodine

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Solution

The correct option is D iodine
The potassium halide is potassium iodide.
$2 K I + C l_{2} \to 2 K C l + I_{2}$
This test confirms the presence of $I_{2}$ .

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