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प्रश्न
Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
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उत्तर
- The main constituents of ice cream are fat, milk solids (skim-milk powder), sugar, gelatin, egg and flavouring.
- Lemonade is a mixture of lemon juice, sugar and water.
- Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapour and other gases.
- Soil is a mixture of clay, sand and various salts.
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संबंधित प्रश्न
What is chromatography? For which type of mixture is it used?
Tick the most appropriate answer
The methods of separating components of a given mixture are based on the
- physical properties and state of the components.
- colour of the components only.
- state of the components.
- none of these
Write true or false
The constituents of a mixture can only be separated by chemical means
State any one method – to separate the following mixtures – A solid-liquid mixture containing an insoluble solid in the liquid component
Select the correct answer from the choice given below to complete the sentence :
The reactive element from the two monoatomic elements is _____________.
Give a reason for the following statement :
Components in a mixture can be separated by physical methods only.
Using suitable apparatus from your laboratory separate the mixture of chalk powder, mustard oil, water, and coins. Draw a flow chart to show the separation process.
State whether the following statement is true or false.
A mixture of wheat grains and wheat flour can be separated by sieving.
Match the mixtures in column I with their method of separation in column II.
| COLUMN I | COLUMN II | ||
| (a) | Oil mixed in water | (i) | Sieving |
| (b) | Iron powder mixed with flour | (ii) | Hand picking |
| (c) | Salt mixed with water | (iii) | Decantation |
| (d) | Lady’s finger mixed with french beans | (iv) | Magnet |
| (e) | Rice flour mixed with kidney beans | (v) | Evaporation |
A mixture of iron nails, salt, oil and water is provided to you. Give stepwise methods to separate each component from this mixture.
