The colour of the residue when ${PbO}_{2}$ decomposes to $PbO and O_{2}$

Pink

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Yellow

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Green

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White

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Solution

The correct option is B
Yellow

Explanation for Correct option
Option (B) Yellow
Lead oxide is a compound which is insoluble in water or dark alcohol. The reaction take place as follows :
${PbO}_{2} (s) \to PbO (s) + O_{2} (g)$
Here, the oxygen gas is evolved in the reaction.
The colour of the residue $PbO$ is yellow.
Hence option B is the answer.
Explanation for incorrect option :
Option (A) Pink.
Lead oxide does not absorb pink colour radiation.
Thus it is incorrect.
Option (C) Green
.Lead oxide absorb in lower frequency such as yellow.
Thus this is incorrect.
Option (D) White :
There is a colour shown by-products Lead oxide.
Thus this option is incorrect.
Hence The colour of the residue is yellow.

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The colour of the residue whenPbO2 decomposes toPbOandO2

The colour of the residue when ${PbO}_{2}$ decomposes to $PbO and O_{2}$