One of the statements of Dalton's atomic theory is given below "compounds are formed when atoms of different elements combine in a fixed ratio". Which of the following laws is not related to this statement?

Law of conservation of mass is not related to this statement which states that matter can neither be created nor destroyed. It has nothing to do with fixed ratio of atoms of different elements.Law of conservation of mass is simply the law of indestructibility of matter during physical or chemical changes. Avogadro's law states that equal volumes of different gases contain the same number of molecules under similar conditions of temperature and pressure.