The metal whose carbonate and nitrate on thermal decomposition give a residue metal is:

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Solution

The correct option is B Ag
$A g C O_{3} \to A g + C O_{2} + O_{2}$
$A g N O_{3} \to A g + N O_{2} + O_{2}$

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Similar questions

16.8 g of metal carbonate on thermal decomposition gave 8 g of metallic oxide and 8.8 g of carbon dioxide. They follow:

2.0

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Name :

(a) a nitrate of metal which on heating does not give nitrogen dioxide.

(b) a nitrate which on heating leaves no residue behind.

(d) a metal nitrate which on heating is changed into metal.

(e) a solution which absorbs nitric oxide.

(f) the oxide of nitrogen which turns brown on exposure to air. How is it prepared ?

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