Oxides of Carbon

Which oxide of carbon is an anhydride of carbonic acid?

Which oxide of carbon is obtained when K_(4)[Fe(CN)_(6)] is warmed with concentrated sulphuric acid ?

Which oxide of carbon is formed when malonic acid is warmed with P_(2)O_(5) ?

A simole oxide of carbon and that another non-metal have the same Cp/Cv ratio but a difference of 2 in their molecular weights. The other non-metal could be?

Why metals like potassium and sodium can not be extracted by reduction of their oxides by carbon?

Which oxide fo carbon is useful in prepring metal carbonyls ?

Write chemical equation for the following word equation and balance them. Calcium oxide + Carbon dioxide to Calcium carbonate

The pair having oxide and carbonate ore respectively

Give reasons why? Aluminium cannot be obtained by the reduction of its oxide with carbon.

Write suitable chemical equations to show the nature of Calcium oxide and carbon dioxide