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Is Matter Around Us Pure
List the various types of homogeneous and heterogeneous mixtures with examples.
(i) Homogeneous mixtures
(a) Solid solution. Alloys, e.g., brass, steel, bronze.(b) Liquid solution. Sugar solution in water, sea water.
(c) Gaseous solution. Air, natural gas.
(ii) Heterogeneous mixtures:
(a) Solid + Solid : sugar and sand, iron filing and sulphur, copper sulphate and potassium permanganate.
(b) Solid + Liquid : Pastes, suspensions etc.
(c) Solid + Gas : Smoke.
(d) Liquid + Liquid : Milk, emulsions.
(e) Liquid + Gas : Soap bubbles.
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Which separation techniques will you apply for the separation of the following?
Ammonium chloride from a mixture containing sodium chloride and ammonium chloride.
Which separation techniques will you apply for the separation of the following?
Small pieces of metal in the engine oil of a car.
Which separation techniques will you apply for the separation of the following?
Different pigments from an extract of flower petals.
Which separation techniques will you apply for the separation of the following?
Butter from curd.
Write the steps you would use for making tea. Use the words—solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.
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