Advertisements
Advertisements
प्रश्न
Compare the properties of iron [II] sulphide with the iron-sulphur mixture, considering iron [II] sulphide as a compound & particles of iron & sulphur mixed together as an example of a mixture.
Advertisements
उत्तर
Iron and sulphur mixture :
- The constituents i.e. iron and sulphur are seen separately.
- Iron attracts and clings to the magnet.
- On adding dil. HC1 to the mixture H2 gas evolves.
Iron [II] sulphide is a compound
- It is a black solid.
- On bringing a magnet near it we cannot separate iron.
- On adding dil. HCl to it H2S gas evolves.
APPEARS IN
संबंधित प्रश्न
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Baking Soda
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
Tick the most appropriate answer.
The different constituents of ink are separated by
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method :
Iron from sulphur
Give a reason for the following statement :
Components in a mixture can be separated by physical methods only.
Give a reason for the following statement :
Zinc is considered an element, while zinc sulphide is considered a compound.
Visit a nearby paddy field and rice mill and note down the different separating techniques used there. Is technology replacing some traditional practices?
Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
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 |
