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प्रश्न
What is centrifugation ? Also write the principle on which it works.
टीपा लिहा
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उत्तर
- Centrifugation : It is a technique used to speed up sedimentation of fine particles suspended in a solid-liquid mixture.
- Principle : The principle of centrifugation is that an object, when spun at high speed, experiences an outward force away from the centre of rotation.
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Differences Between Elements, Compounds, and Mixtures
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संबंधित प्रश्न
Name the main metal present in the following:
Chalk
Name the main metal present in the following:
Chocolate wrappers
State four difference between compounds and mixtures.
Fill in the blank:
________ and _______ are pure substances.
Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
Match the columns.
| Column A | Column B |
| 1. To separate grain from chaff | a. filtration |
| 2. To seperat sawdust from water | b. sedimentation and decantation |
| 3. To separate iodine from sodium chloried | c. winnowing |
| 4. To separate iron fillings from sand | d. sublimation |
| 5.It is used to separate sand and water | e.magnetic separation |
| f. handpiicking |
Name the techniques used to separate a solid from its solution.
Differentiate between the terms elements, compounds, and mixtures with suitable examples.
When two or more elements combine together they form ______.
Write the differences between mixture and compounds.
