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Pyrorefining

Name a metal ...

Question

Name a metal from the activity series which forms a nitrate which on thermal decomposition leaves a metallic residue?

A

Silver

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B

Gold

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C

Copper

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D

Iron

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Solution

The correct option is D Silver
$A g N O_{3} \to A g + N O_{2} + \frac{1}{2} O_{2}$
Silver nitrate decomposes into Silver, Nitrogen oxide and oxygen.

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