A "hard method of separation" is not an expression in chemistry.
Using the separating funnel method can be separated mixtures of liquids with different densities.
if ur talking about separation of mixtures, this method applies to heterogenous solid mixtures. It involves manually separating each of the component elements of a mixture. an example would be separating a mixture of iron nalis and screws.
There are several different ways and procedures of separating mixtures, though, some mixtures areirreversible, and can permanently be combined. A few ways of separating mixtures is through evaporation, filtration, sieving, gravity separation, distillation, condensation, froth flotation, magnetic separation, chromatography, and centrifuging (http://www.slideshare.net/brittgow/separating-mixtures-1247457). Also certain chemical reactions can separate mixtures, or create substances, i.e. acid+base=salt+water etc. (If this is no help I'm sorry just look up separating mixtures on Google).
Most of the components of petroleum are separated by Fractional distillation.
by sifting,magnetism
Using the separating funnel method can be separated mixtures of liquids with different densities.
Paper chromatography is a method.
By this method iron (being ferromagnetic) is extracted from mixtures.
Filtration is the best method.
This method is called paper chromatography.
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For example filtration, manual collection.
An insoluble solid can be separated by filtration from the liquid.
You think probable to a chromatographic method or to decantation.
if ur talking about separation of mixtures, this method applies to heterogenous solid mixtures. It involves manually separating each of the component elements of a mixture. an example would be separating a mixture of iron nalis and screws.
that is the method that the method is a method
This is a simple method common in a kitchen; use a scoop.