What happens when a base reacts with a metal

Q. What happens when metal reacts with base?

Q.

What happens when Bases react with non-metal oxides?

Q. What happens when a metallic oxide reacts with non metallic oxide? Give an example

Q. Answer the following question:
(a) What happens when a dilute acid reacts with a metal oxide? Explain with the help of an example.
(b) Are there any metal oxides that react with both acids and bases? If yes, give an example.
[3 Marks]