Acid + alkali - Salt + water, Acid + metal - Salt + hydrogen, Acid + metal oxide - Salt + water, Acid + carbonate - Salt + carbon dioxide + water, Nitric acid - HNO3, Hydrochloric acid - HCl , Sulphuric acid - H2SO4, Sodium hydroxide - NaOH, Calcium oxide - CaO, Copper carbonate - CuCO3,

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