Question

Q1. a) Define Mixture. Explain in detail about the various techniques of separation of

mixture with well-labelled diagrams.​

Answer 1

mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Handpicking

Threshing

Winnowing

Sieving

Evaporation

Distillation

Filtration or Sedimentation

Separating Funnel

Magnetic Separation

Answer 2

Explanation:

Mixture

A mixture is composed of two or more types of matter that can be present in varying amounts and can be physically separated by using methods that use physical properties to separate the components of the mixture, such as evaporation, distillation, filtration and chromatography.

Evaporation can be used as a separation method to separate components of a mixture with a dissolved solid in a liquid. The liquid is evaporated, meaning it is convert from its liquid state to gaseous state. This often requires heat. Once the liquid is completely evaporated, the solid is all that is left behind.

Distillation is a separation technique used to separate components of a liquid mixture by a process of heating and cooling, which exploits the differences in the volatility of each of the components.

Filtration is a separation technique used to separate the components of a mixture containing an undissolved solid in a liquid. Filtration may be done cold or hot, using gravity or applying vacuum, using a Buchner or Hirsch funnel or a simple glass funnel . The exact method used depends on the purpose of the filtration, whether it is for the isolation of a solid from a mixture or removal of impurities from a mixture.

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