Chemistry
Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once:
[SO2, SiO2, Al2O3, MgO, CO, Na2O]
(i) A basic oxide
(ii) An oxide which dissolves in water forming an acid
(iii) An amphoteric oxide.
(iv) A covalent oxide of a metalloid
Metallurgy
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Answer
(i) Na2O
(ii) SO2
(iii) Al2O3
(iv) SiO2
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