Sodium hydroxide and hydrochloric acid react to form sodium chloride and water. Which reaction is this?

The reaction between an acid and a base to give a salt and water is known as a ______________ reaction.

Aqua regia is a mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio of

An unknown gas quickly dissolves in water. This gaseous aqueous solution turns red litmus into the blue. This gas produces white flame with hydrogen chloride. This unknown gas is –

Bee sting leaves an acid which causes pain and irritation. The acid released is

Some metal oxides react with acid as well as base to produce salt and water. They are known as amphoteric oxides. The examples of amphoteric oxides are