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प्रश्न
Choose the most appropriate answer
Which of the following property is not shown by compounds?
विकल्प
They are heterogeneous.
They are homogeneous
They have definite molecular formulae.
They have fixed melting and boiling points
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उत्तर
They are heterogeneous.
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संबंधित प्रश्न
Fill in the blank
Mixtures can be ...................... or .....................
How can you separate iron metal from non-magnetic impurities ?
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 |
Name the following:
The non-sublimable solid from a mixture of iodine and potassium nitrate.
State any one method – to separate the following mixtures – A liquid-liquid mixture containing – two miscible liquids having different boiling points.
Explain with diagram the process used to – separate the following substance from the given mixtures - Carbon tetrachloride from a mixture of – carbon tetrachloride [heavier component] & water.
Select the correct answer from the choice given below to complete the sentence :
A soluble solid is separated from an insoluble solid by ____________.
Why do we separate mixtures?
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.
Visit a nearby paddy field and rice mill and note down the different separating techniques used there. Is technology replacing some traditional practices?
