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Q.

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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a

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

b

Dichromate convert to chromate in alkaline medium

c

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

d

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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