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प्रश्न
Why is iron sulphide a compound ?
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उत्तर
Iron sulphide is a compound which can be broken into the elements iron and sulphur they both have different properties. The properties of compound are entirely different from there of its constituents elements.
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संबंधित प्रश्न
Fill in the blank
................. is used when the constituents of a mixture of solids have difference in their weights
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
Match the ideal method of separation of components in a mixture in List I with the appropriate process in List II.
| List I | List II |
| 1. Sand from a mixture of sand and water | A: Separating funnel |
| 2. kerosene from a mixture of kerosene water | B: Sublimation |
| 3. Alcohol from a mixture of methyl alcohol and water | C: Filtration |
| 4. Naphthalene from a mixture of naphthalene and lead chloride | D: Distillation |
| 5. Pure water from impure water | E: Fractional distillation |
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.
State any one method – to separate the following mixtures – A solid-liquid mixture containing – a soluble solids in the liquid component
Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
A mixture of milk and water can be separated by filtration.
Grain and husk can be separated with the process of decantation.
State whether the following statement is true or false.
A mixture of wheat grains and wheat flour can be separated by sieving.
