Name a metal nitrate which on heating, is changed into metal oxide.

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Solution

A metal nitrate which on heating is changed into metal oxide is calcium nitrate.
Calcium nitrate on heating decomposes to form corresponding nitrite and gives an oxygen molecule.
$\underset{calcium nitrate}{\underset{}{2 Ca {({NO}_{3})}_{2}}} \to \underset{calcium oxide}{\underset{}{2 CaO}} + \underset{nitrogen dioxide}{\underset{}{4 {NO}_{2}}} + \underset{oxygen}{\underset{}{O_{2}}}$

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