Chromates and dichromates are inter convertible depending on the pH of the solution. Then which of the following statement is wrong

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During conversion of chromate to dichromate colour changes from yellow to orange red

Dichromate convert to chromate in alkaline medium

Conversion of dichromate to chromate is oxidation as it gains one oxygen

Chromate convert to dichromate in acid medium

answer is C.

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Detailed Solution

Inter conversion chromate and dichromates is neither oxidation nor reduction as there is no change in oxidation number of chromium.

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