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Q.

$4 K_{2} {Cr}_{2} O_{7} \overset{heat}{⟶} 4 K_{2} {CrO}_{4} + 3 O_{2} + X$ In the reaction X is

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a

CrO₃

b

Cr₂O₃

c

Cr₂O₇

d

CrO₅

answer is B.

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Detailed Solution

Potassium dichromate, on heating gives oxygen and chromic oxide (Cr₂O₃).

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