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प्रश्न
Differentiate between homogeneous and heterogeneous mixtures with examples.
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उत्तर १
A homogeneous mixture is a mixture having a uniform composition throughout the mixture. For example, mixtures of salt in water, sugar in water, copper sulphate in water, iodine in alcohol, alloy, and air have uniform compositions throughout the mixtures.
On the other hand, a heterogeneous mixture is a mixture having a non-uniform composition throughout the mixture. For example, composition of mixtures of sodium chloride and iron fillings, salt and sulphur, oil and water, chalk powder in water, wheat flour in water, milk and water are not uniform throughout the mixtures.
उत्तर २
| homogeneous mixtures | heterogeneous mixtures | |
| 1. | Made up of regular materials, it has a uniform composition. | Made up of more than one different material it does not have a uniform composition. |
| 2. | It has an absence of separation boundaries between different materials. | It has clear separation boundaries between different materials. |
| 3. | Its components are not easily seen. | Its components can be seen. |
| 4. | Example: Salt in water | Example: Oil in water |
संबंधित प्रश्न
List four characteristics of a mixture.
Give reason:
Why do sugar and water retain their individual properties in a sugar solution?
Name the components present in the following mixture:
Duralumin
Write “true” or “false” for the following statement
Steel is an alloy of iron and aluminum.
Match the statements in List I with the correct answer in List II.
| List I | List II |
| 1. Purification of water by adding alum | A: Sublimation |
| 2. Seawater leaving behind common salt | B: Sieving |
| 3. Separation of camphor and potassium chloride | C: Filtration |
| 4. Separation of charcoal from a charcoal-water mixture | D: Sedimentation |
| 5. Separation of bran and wheat flour | E: Evaporation |
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.
State what information is provided by the formula of calcium hydroxide – Ca(OH)2
Suggest separation technique(s) one would need to employ to separate the following mixture.
Kerosene oil, water and salt
The ‘sea-water’ can be classified as a homogeneous as well as a heterogeneous mixture. Comment.
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 ______.
