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प्रश्न
Choose the most appropriate answer
A pair of metalloids are
विकल्प
Na and Mg
B and Si
C and P
He and A
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उत्तर
B and Si
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संबंधित प्रश्न
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Salt from sea water
Write true or false
The constituents of a mixture can only be separated by chemical means
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 |
State any one method – to separate the following mixtures – A liquid-liquid mixture containing – two immiscible'' liquids having different densities
State any one method – to separate the following mixtures – A liquid-gas mixture containing – a gas dissolved in a liquid component.
State any one method – to separate the following mixtures – A mixture of different solid constituents – in a liquid constituent.
Explain with a diagram the process used to – separate the following substance from the given mixture.
Potassium nitrate from a mixture of – potassium nitrate & potassium chlorate.
Select the correct answer from the choice given below to complete the sentence :
A soluble solid is separated from an insoluble solid by ____________.
Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it?
State whether the following statement is true or false.
A mixture of oil and water can be separated by filtration.
