State any five methods of separating a solid-solid mixture.
State any five methods of separating a solid-solid mixture.
Separation of Mixture of two Solids:
1. Mechanical Picking or Handpicking: In this method, components are separated on the basis of physical characteristics like size and shape.
Example- Removing stones from grains. This technique in which a mixture can be separated by picking them out by hand is called Handpicking. This method can be used to separate slightly larger pieces of dirt, stones and husk from the grains because the quantity of such impurities is usually not very large.
2. Sieving: Sieving is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very small holes. Coarse particles are separated or broken up by grinding against one another and the screen openings.
3. Winnowing: Winnowing means the separation of two heterogeneous solids, which can be defined by the separation of heavier substances from the lighter substance of a mixture using air or blowing air. It depended on the fact that the mixture containing two components and one is heavier than another one, then it separated.
Example: Separation of grains from husk
4. Threshing: The common method for manual threshing is hand beating against an object, treading, or holding the crop against a rotating drum with spikes or rasp bars. Hand beating methods are normally used for threshing rice that easily shatters (i.e., at lower moisture content).
5. Magnetic Separation: If a mixture contains iron as one of the constituents, it can be separated by using a magnet.
Example: A mixture of iron fillings and Sulphur powder can be separated by a magnet. Iron filings will get attracted to the magnet and Sulphur did not attach to the magnet. This technique is useful for a few minerals which contain magnetic properties and also for minerals with paramagnetic (materials that are less affected) properties. Not all metals are magnetic; gold, silver and aluminium are some examples.
Separation of Mixture of two Solids:
1. Mechanical Picking or Handpicking: In this method, components are separated on the basis of physical characteristics like size and shape.
Example- Removing stones from grains. This technique in which a mixture can be separated by picking them out by hand is called Handpicking. This method can be used to separate slightly larger pieces of dirt, stones and husk from the grains because the quantity of such impurities is usually not very large.
2. Sieving: Sieving is a simple technique for separating particles of different sizes. A sieve such as used for sifting flour has very small holes. Coarse particles are separated or broken up by grinding against one another and the screen openings.
3. Winnowing: Winnowing means the separation of two heterogeneous solids, which can be defined by the separation of heavier substances from the lighter substance of a mixture using air or blowing air. It depended on the fact that the mixture containing two components and one is heavier than another one, then it separated.
Example: Separation of grains from husk
4. Threshing: The common method for manual threshing is hand beating against an object, treading, or holding the crop against a rotating drum with spikes or rasp bars. Hand beating methods are normally used for threshing rice that easily shatters (i.e., at lower moisture content).
5. Magnetic Separation: If a mixture contains iron as one of the constituents, it can be separated by using a magnet.
Example: A mixture of iron fillings and Sulphur powder can be separated by a magnet. Iron filings will get attracted to the magnet and Sulphur did not attach to the magnet. This technique is useful for a few minerals which contain magnetic properties and also for minerals with paramagnetic (materials that are less affected) properties. Not all metals are magnetic; gold, silver and aluminium are some examples.
