Neutralisation is the process of adding base to an acid whereas galvanisation is the process of coating a layer of zinc on iron.
potense of hydrogen or power of hydrogen is basically a test used to determine strengh of a acid or a base.
Alkalies are the bases that are soluble in water.Some bases are not soluble in water they are not called alkalies
so i hope you know what a mixture is. well a mixture a mixture is two or more elements or compounds mixed together but not chemically combined are called mixtures . they can be easily seperated. example: air is mixture of gases like nitrogen oxygen etc. now a heterogenious mixture is a mixture that composes of components that are not uniform and have totally different properties. i hope this answer helps.