Advertisements
Advertisements
प्रश्न
Explain why, a solution of salt in water is considered a mixture and not a compound.
Advertisements
उत्तर
Solution of salt in water is a mixture and not compound because salt solution is made up of salt and water, mixed physically.
- The constituents of salt solution might be present in varying ratios.
- Salt solution does not have fixed properties. Its properties depend on the nature of its components and the ratios in which they are mixed.
- The constituents of salt solution can be separated easily by physical methods, i.e., distillation.
APPEARS IN
संबंधित प्रश्न
What are the characteristic properties of a pure substance? Why do we need them?
Choose the solutions from among the following mixtures :
Soil, Sea-water, Air, Coal, Soda-water
Milk is an example of a type of matter called ______.
Why do we need pure substances?
Fill in the blanks
Mist is a _________ mixture of droplets of water and air.
Write “true” or “false” for the following statement
A pure substance consists of only one kind of atom or molecule.
Give a reason why sublimable and non-sublimable substances can be separated easily, but two sublimable substance cannot.
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 |
The ‘sea-water’ can be classified as a homogeneous as well as a heterogeneous mixture. Comment.
Supernatant denotes the heterogeneous mixture, lying above a solid residue, after crystallization, precipitation, centrifugation, or another process.
