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प्रश्न
Discuss the method of separating a mixture containing chalk powder, iron filings and naphthalene.
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उत्तर
The method of separating a mixture containing chalk powder, iron filings and naphthalene employs the use of a magnet followed by sublimation. At first, a magnet is moved over the mixture. Iron fillings are attracted by the magnet and get separated. Then the chalk powder and naphthalene are separated by sublimation. In this process, the mixture of chalk powder and naphthalene is heated. Naphthalene sublimes on heating, and its vapours are condensed over a cold apparatus. Chalk powder, being nonvolatile, is left behind as residue.
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संबंधित प्रश्न
Classify each of the following as a homogeneous or heterogeneous mixture.
Soda water, wood, air, soil, vinegar, filtered tea.
Name one pair of substances whose mixture can be separated completely by distillation.
Name two substances soluble in water.
Write “true” or “false” for the following statement
A pure substance consists of only one kind of atom or molecule.
Write “true” or “false” for the following statement
Steel is an alloy of iron and aluminum.
Name the following:
A mixture of two immiscible liquids
Select the correct answer from the choice in the bracket.
A homogenous mixture.
Give an example for mixture and justify your answer with reason.
A mixture of iron filings and salt is a ______ type of mixture.
LPG is ______ gas.
