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प्रश्न
List four characteristics of a mixture.
उत्तर
Four characteristics of a mixture:
- The mixture has no fixed composition.
- To form mixture energy is neither produced nor evolved.
- The mixture has no fixed melting points and boiling points.
- Mixture retains the properties of its components.
- Components of mixtures can be separated by simple physical methods.
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संबंधित प्रश्न
Name the process you would use to separate a mixture of two miscible liquids (like acetone and water).
Name one pair of substances whose mixture can be separated completely by distillation.
Why do we need pure substances?
Write “true” or “false” for the following statement
A pure substance consists of only one kind of atom or molecule.
State the technique involved in separating the following:
Iodine crystals and potassium chloride
State whether the following statement is true or false. If false write – the correct statement.
Sodium chloride and water is an example of a mixture of elements and compounds.
Give an example for mixture and justify your answer with reason.
Why do we need to separate different components of a mixture? Give two examples.
Which of the following are physical changes?
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod
(iv) Drawing a wire of iron metal
A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25 K can be separated by the process called ______.
