Question

what is dilute solution and give its opposite

Answer 1

Dilution is the process of decreasing the concentration of a solute in asolution, usually simply by mixing with more solvent like adding more water to a solution. To dilute a solution means to add more solvent without the addition of more solute.

Answer 2

A solution containing a relatively small quantity of solute as compared with the amount of solvent. This term is the opposite of 'concentrated'.