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प्रश्न
Why is it named so?
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उत्तर
It is named so, because earlier it was used to separate mixtures containing coloured components only but these days this technique is applied to colourless substances too.
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संबंधित प्रश्न
Name the main metal present in the following:
Chocolate wrappers
Define:- Filtration
Fill in the blank:
________ and _______ are pure substances.
Give one word answer
The process of transferring the clean liquid after the solid settles at the bottom of the container
Fill in the blank.
_________ is used when the constituents of a mixture of solids have a difference in their weights.
Write true or false
All pure substances have characteristic melting and boiling points.
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 |
Differentiate between the following.
solution and suspension
Name the substance you will add to speed up sedimentation.
What is centrifugation ? Also write the principle on which it works.
