JEE Advanced Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Advanced

Not in JEE Main or NEET syllabus

Which oxides will not give metal on heating?

(A)HgO
(B)ZnOCorrect
(C)
(D)All of these

Answer: (B)

Solution

Metals that lie low in the reactivity series (below hydrogen), such as Hg and Ag, form oxides that are thermally unstable and decompose directly to the free metal and oxygen on heating: and . Zinc,

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Question ID VK-159629