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A mixture of starch solution and potassium iodide was placed...

A mixture of starch solution and potassium iodide was placed in a test tube. On adding dilute tetraoxosulphate (lV) acid and then K₂Cr₂O₇ solutions, a blue-black colour was produced. In this reaction, the?

A.

iodide is oxidized

B.

tetraoxosulphate (Vl) acid acts as an oxidizing agent

C.

starch has been oxidized

D.

K₂Cr₂O₇ is oxidized

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Correct answer is C

No explanation has been provided for this answer.

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