Q.1. Which separation technique will you apply for the
separation of the following?
(a) Sodium chloride from its solution in water,
(b) Ammonium chloride from a mixture containing
sodium chloride and ammonium chloride,
(c) Small pieces of metal in the engine oil of a car,
(d) Different pigments from an extract of flower petals.
(e) Butter from curd.
() Oil from water.
(8) Tea leaves from tea.
(h) Iron pins from sand.
(i) Wheat grains from husk.
(j) Fine mud particles suspended in water. (CBSE-2010)
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Answer:-
(a) Evaporation technique is used to separate sodium chloride from its solution in water.
(b) Sublimation technique is used to separate Ammonium chloride from a mixture containing
sodium chloride and ammonium chloride.
(c) Filtration technique is used to separate small pieces of metal in the engine oil of a car.
(d) Chromatography technique is used to separate Different pigments from an extract of flower petals.
(e) Centrifugation technique is used to separate butter from curd.
(f) Separating Funnel technique is used to oil from water.
(g) Filtration technique is used to separate tea leaves from tea.
(h) Magnetic Separation is used to separate iron from sand.
(i) Winnowing technique is used to separate wheat grain from husk.
(j) Sedimentation and Filtration technique is used to separate fine mud particles suspended in water.
Answer:
(a) Evaporation
(b) Sublimation
(c) Filtration
(d) Chromatography
(e) Centrifugation
(f) By separating funnel
(g) Filtration
(h) Magnetic separation
(i) Winnowing
(j) Centrifugation
HOPE IT HELPS!