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(A) Starch paper is used to detect the presence of $I_{2}$ (iodine).When an oxidizing agent reacts with an iodide ion $(I^{-})$,it produces iodine $(I

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Iodine

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(A) Starch paper is used to detect the presence of $I_{2}$ (iodine).When an oxidizing agent reacts with an iodide ion $(I^{-})$,it produces iodine $(I_{2})$.$2I^{-} + 	ext{oxidant} ightarrow I_{2} + 	ext{reduced product}$The produced $I_{2}$ reacts with starch to form a characteristic blue-black complex.$I_{2} + 	ext{starch} ightarrow 	ext{blue-black complex}$

Starch paper is used to test for the presence of

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