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1. Why metallic oxide is a base and non-metallic oxide is an acid?
2. Explain the Formation of Cake and name which compound is used in it.
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1. Metallic oxides are basic in nature because they react with water to form bases.
Eg.
4Na + O₂ -------> 2Na₂O
Na₂O + H₂O -------> 2NaOH
Non-metallic oxides are acidic in nature because they react with water to form acids.
Eg.
C + O₂ ---------> CO₂
CO₂ + H₂O ----------> H₂CO₃
2. Baking Soda, NaHCO₃ is used to bake cakes because when it is heated, CO₂ gas is given off, which causes the cake to rise.
2NaHCO₃ ---------> Na₂CO₃ + H₂O + CO₂
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