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Q.

Select the incorrect statement.

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a

In the decomposition of an solid metal oxide into oxygen and gaseous metal, entropy increases.

b

Decomposition of a metal oxide is an endothermic change.

c

To make ΔGo negative, temperature should be high enough so that TΔSo > ΔHo.

d

MgO (s) can be decomposed at a low temperature

answer is D.

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Detailed Solution

Decomposition temperature of MgO (s) is very high. It is almost not possible to extract magnesium from its oxide
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Select the incorrect statement.