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Which of the following statement(s) is incorrect?

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Ammonium dichromate on heating undergo exothermic decomposition to give Cr₂O₃.

An acidified solution of K₂Cr₂O₇ liberates iodine from iodides.

Potassium dichromate is used as a titrant for Fe²⁺ ions.

In acidic solution dichromate ions are converted to chromate ions.

answer is C.

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Detailed Solution

Potassium dichromate can be used in case of Fe+2 , Since it is oxidizing in nature and converts iron to Fe+3..

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